Malicious PDF — malware analysis report

Static analysis result for SHA-256 886c2f7227531d5d…

MALICIOUS

PDF

79.0 KB Created: 2021-09-20 00:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0a7c2c800a1b1e8dfaeabf6d6b269538 SHA-1: f42bf00588133592e66bd3cedca84e23a718f0af SHA-256: 886c2f7227531d5da7ed2cfa30cc1971ccfaeb586a7c3c56c972e39cd28c55b5
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is identified as a link farm, with many links pointing to compromised CMS upload storage. The presence of embedded JavaScript and a critical ClamAV detection for 'Pdf.Phishing.Trojan' strongly indicates malicious intent. The primary goal appears to be redirecting users through a chain of links, likely to a phishing page or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://ketchas.ru/uplcv?utm_term=hack+mods+for+roblox PDF link annotation
    • http://misterholidaysanprisco.it/userfiles/files/jamadidigapop.pdfIn PDF document text
    • https://thegmsbihta.in/userfiles/file/zolofuna.pdfIn PDF document text
    • http://gyliver.ru/files/files/55839449551.pdfIn PDF document text
    • http://85560891.com/upfolder/e/files/20210910030547.pdfIn PDF document text
    • https://www.sibirprokat.ru/ckfinder/userfiles/files/9079968960.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/sitagivinewej.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/fibokonukemoxof.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/du0ec1avps92fe9dcdkffr50om/12239177131.pdfIn PDF document text
    • http://lidaoxc.com/upload/files/xisixofukagemikelafuvasa.pdfIn PDF document text
    • http://jawarakreasi.com/file/demidalesukokiruvirepis.pdfIn PDF document text
    • http://ivankotov.ru/img/lib/file/dupegofetafi.pdfIn PDF document text
    • http://bolt-go77.com/fckeditor/userfiles/file/66935947783.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/kudokawamadupexulujanodu.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614490d4ad851---nimewuwenivagijunoravavit.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/16132a27b41263---56221150915.pdfIn PDF document text
    • http://pitin-akutsu.com/js/upload/files/furopovelazoxekovura.pdfIn PDF document text
    • http://myphamasia.net/upload/files/98687157373.pdfIn PDF document text
    • http://hodinovysoused.cz/upload/file/88481119812.pdfIn PDF document text
    • http://dubilex.com/userfiles/files/gofulakejibexizoje.pdfIn PDF document text
    • https://noelex22.org/userfiles/file/vibulurisorojagupef.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/97349780678.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/e83ede57c867d06b3d0a068d2efd86cf/83049350688.pdfIn PDF document text
    • https://scavilecis.it/userfiles/file/71176280800.pdfIn PDF document text
    • http://rainhouse.kr/data/editor/file/2318748066138c7b6ac03c.pdfIn PDF document text
    • 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_off0000cf76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF76 10536 bytes
SHA-256: 7e646ddd52cdf234ff3bb2282ff804e418a7ace2215b84233da7329d04439d54
font_01_sfnt_off0000e776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE776 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF88 17956 bytes
SHA-256: a6f7bada3bfcb525956dd942d1dc8eb0e99d0577f8fb795094bb77e60bf82042

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