Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2502a77f5bd6d0…

MALICIOUS

PDF

71.4 KB Created: 2021-08-07 13:49:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e0ec5a8b040ae57e17051eb5692b6986 SHA-1: 6bea589f3a7f7fa9f18238880ca7f59ca082f3e4 SHA-256: be2502a77f5bd6d09a679541fec1527b6694d171c85808d2c2624bad26d81b07
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • 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.
  • 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://aquafilling.com/userfiles/file/12152692275.pdf In PDF document text
    • https://parklanehotel.asia/userfiles/file/57238064193.pdfIn PDF document text
    • http://waltwhitmanhsclassof1970.com/clients/3/38/385e9ad2c098ba3bcab8db81b262ab1e/File/bogimunoxawadupu.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/057e392e9008f7b91d94821c82f676c6/dorirusisubesutexavatatog.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c283f38aa---zeditosavopalubolefoset.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/garuvuwesanut.pdfIn PDF document text
    • http://kiemtoanhaiphong.vn/upload/files/36346780989.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1d5b5409f---78857961882.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/08fl21f2qfvutk49ugfrchh68f/zonovademunaniwatotasor.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160900061df01a---59887264374.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/8gpe8u4nohmp8t0pbbje6dhbjn/vedezat.pdfIn PDF document text
    • https://haltia.mx/sii/ckfinder/userfiles/files/26733068573.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/33445024204.pdfIn PDF document text
    • https://pestresolution.pt/site/upload/file/23959692176.pdfIn PDF document text
    • http://classicalgardenfountains.com/uplds/file/73029306075.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/fisesuzejawaxem.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1608100ae305ca---9776077480.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/cb4949c1748ff8bdd385dcea1546698d/17247266308.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/dozoligokesoditesunupu.pdfIn PDF document text
    • http://netflor.pl/upload/File/mulopuxut.pdfIn PDF document text
    • http://gccde.com/downloads/blog/geust/files/tutiwuwofebosubojobi.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/wifubidosopuvukazijeta.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=parts+of+speech+worksheets+5th+gradePDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB81E 14972 bytes
SHA-256: ad79b7edd8cb74e0f70ea0b68355588fe9ca59c7792ed832cf7fb46003708798
font_01_sfnt_off0000de67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE67 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67E 10972 bytes
SHA-256: ab22e80669115cdd2ea9a118b00b3fbe831fff36035a0a18b260e534cec5a786

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