Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb9d25bb1947b6c…

MALICIOUS

PDF

74.3 KB Created: 2021-04-03 22:18:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 533a1667d627ce296b0f05d710e89379 SHA-1: 2dfbbf030cbff955031b0cbb69d40458ffd47d41 SHA-256: 3fb9d25bb1947b6c058881baca273e4dd06ae40352433c717ee3882fc119a468
136 Risk Score

Malware Insights

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

The PDF file contains a lure related to car sales, which is a common phishing tactic. It embeds a URL that redirects to a suspicious domain, indicating a phishing attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/strik?utm_term=used+tesla+model+3+for+sale+in+las+vegas PDF link annotation
    • https://cdn.sqhk.co/badexejos/ihgdQ0x/ayenam_ennepa_video.pdfIn PDF document text
    • http://dilurijarejo.22web.org/67971835338.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/xisekafixivokotonoz.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/59200876527.pdfIn PDF document text
    • https://cdn.sqhk.co/debefuki/ege4ijU/night_of_the_full_moon_werewolf_guide.pdfIn PDF document text
    • http://suvonenexazu.mywebcommunity.org/certified_ethical_hacker_v9.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/WieXzDt/ximumipi.pdfIn PDF document text
    • http://ruxuzosok.mywebcommunity.org/beyond_the_blackboard_summary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://redifigikutusoj.myartsonline.com/burglar_alarm_circuit_using_scr.pdfIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_65d1327aadd845928014395c7630d022.pdf?index=trueIn PDF document text
    • http://zupitatip.atwebpages.com/if_every_living_thing_dies_alone.pdfIn PDF document text
    • http://guwoxidewoje.epizy.com/away_in_a_manger_pentatonix.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/bupaka.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/graduation_maya_angelou_summary_sparknotes.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/oklahoma_corporation_commission_form_1006.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/34669956611.pdfIn PDF document text
    • http://wupotolirenenar.epizy.com/vebufepesesivebirazof.pdfIn PDF document text
    • https://77bac38d-831a-46d6-8f22-d7743fcadc58.filesusr.com/ugd/5b9a87_f9a89944042b406f9dc7fcc2321fd71f.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DF 5444 bytes
SHA-256: b89890934cfe5ce3c06c22509562a7ad30c448ec0b9fb1a0973d14e608f09246
font_01_sfnt_off0000f657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF657 11212 bytes
SHA-256: 04dfa28b28e00fdbe3fcc35da6bc125f64154f759c1a386c0cc61210d533d725

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