Malicious PDF — malware analysis report

Static analysis result for SHA-256 e69568cf60c15867…

MALICIOUS

PDF

74.2 KB Created: 2020-12-19 06:07:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 94fb1bd710c2a9632cd30420e118ae18 SHA-1: 69f79d786d2e21435e4e587c49f0c2c135370005 SHA-256: e69568cf60c15867ac06231cf3f6caca8b437322d5b64cae9add2a3b59f15cf0
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for a link farm and an embedded URL pointing to 'trafffi.ru', suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external links and the nature of the heuristics suggest the document is designed to redirect users to malicious content, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/strik?utm_term=gibson+maestro+acoustic+guitar+price PDF link annotation
    • https://vunufagedumuved.weebly.com/uploads/1/3/4/7/134740761/2262720.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/guided_reading_level_of_goosebumps_books.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f485cd1e280355d49316/t/5fc7f9d36ff1704bbbc2a236/1606941139856/leap_year_2010_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/pasamapirazumexodakezek.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2a3195e8e827d4299026a/t/5fc3c4204e98326c0284418d/1606665248586/zazejejafatipo.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/kabupiranefuta.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/madness_project_nexus_hacked_unblocked_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/78294466144.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/hamilton_chicago_bootleg_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/zemarojuw.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/88114670692.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc395d1c6229360ecbdc211/t/5fcc20a70ab5d62febe1e7c2/1607213224320/5677398620.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/24274537013.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6db42504bb4653ce19d0c/t/5fd0d0a1b8bf0379e613c522/1607520418357/mazijukupaxugipegonu.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6BA 5272 bytes
SHA-256: b6936da34e5e5db8846bd067d268ccee6e9da87abd47823e46cac60162d838d9
font_01_sfnt_off0000e887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE887 11112 bytes
SHA-256: 2f126ab721654ae88d28025d2027114d2bbf73ffa68bee0e015dfabaadd7bede
font_02_sfnt_off00010dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DCD 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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