Malicious PDF — malware analysis report

Static analysis result for SHA-256 072402f90e84438c…

MALICIOUS

PDF

101.5 KB Created: 2021-07-26 03:42:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 431519e77cd2774702c96d836b95c5b6 SHA-1: 1c22ee441bb0ad678693aedac7daf2c02a4e01b4 SHA-256: 072402f90e84438c7e07bf2d26c95f9faaf0edbb51c0f1f33bd9ae343e6c238a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a significant number of external URIs, many of which point to compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The embedded JavaScript likely facilitates the execution of malicious actions or the redirection to these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160810a5c08995---75864863535.pdf In PDF document text
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/mjb2op2k6dl4rtg5hke9fv1gck/mukij.pdfIn PDF document text
    • http://dbjhockeytournament.com/clients/f/f9/f9ff496842c877cbb4522510b668f2a2/File/gaxipepaxuwafarazix.pdfIn PDF document text
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/45a8faf55ca26f2f063a7dd2de4135d0/59180862845.pdfIn PDF document text
    • http://oishisushigd.com/uploads/files/volisozesekajedejux.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aa75448b970---zalupopawutude.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/6e0bfbd944acf07843ef767d184677c7/60359922075.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/vqq427ot22a40i7rkaofvdnvm4/sikazizutaxezegitetekifel.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a73ea5ada97---jujixasujawufule.pdfIn PDF document text
    • http://dspec-car.com/js/upload/files/15479399401.pdfIn PDF document text
    • http://thumpamonpally.com/userfiles/file/xotaw.pdfIn PDF document text
    • https://www.micron21.com/application/third_party/ckfinder/userfiles/files/62391952235.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/33n1mhtajk3olocq9ne067gj53/27345528012.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7218b96d---19854707723.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/09a409d7bbf7f19c1cc8ea7ab65bc7df/gadirubetedefosilosewobuk.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d96579838---81624606839.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/sitonoxaweduwoliveb.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607065bb5bfb9---7637708055.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/e934c7ad6870254fd4ee2f27ae3c4043/63378874393.pdfIn PDF document text
    • http://unipsyclinic.com/userfiles/file/20210515105942.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/c2e5050d74c31015aa7025bda646070d/duvidevetelajitutud.pdfIn PDF document text
    • http://iaestedresden.de/userfiles/file/17880234122.pdfIn PDF document text
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/eb8c8fbf0684721673c8d7e69155eeb4/5981065072.pdfIn PDF document text
    • https://amsteroverseas.com/ckfinder/userfiles/files/79299741380.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=the+twilight+saga+new+moon+full+movie+download+in+hindi+300mbPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010546.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10546 17876 bytes
SHA-256: 7d9a006a075b21cdc533e8cdc78e7225fac5dfd2a141fc588e78d2cd803354d1
font_01_sfnt_off00012058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12058 11352 bytes
SHA-256: 317f2ffafcb293784dfe53b261f88b7523a8c50e733391387b9304964b3a6ae4
font_02_sfnt_off00013ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AC2 20084 bytes
SHA-256: 34c815696c4a56b578ab71be3c55a484a38ade0bff82842038ffc6ce4b724643
font_03_sfnt_off00016e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E2E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.