Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddfc026aaf13b8c2…

MALICIOUS

PDF

71.4 KB Created: 2021-02-26 05:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 075e2f84e293c2ecadad99abdc6328aa SHA-1: 2683cdb99087c99033be625982c3a5efdcb69937 SHA-256: ddfc026aaf13b8c2859993f3eada7b8d7caf10c07c4b1b197be78678355fb780
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://bologen.ru/award?keyword=does+dunkin+mocha+swirl+have+dairy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450727/normal_5fdebd4287423.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/ekWhaGd/bluetooth_speaker_for_car.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479921/normal_5fec15512784f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378836/normal_5fec7eba0e4c0.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/aihjc8y/78505998316.pdfIn PDF document text
    • https://cdn.sqhk.co/pizokifuxe/sXCgdbq/turkce_pop_remix_sarkilar_2020_mp3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470232/normal_600342cc2800b.pdfIn PDF document text
    • http://bbflowers.net/mikedexadg67vc.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/numinutavoti.pdfIn PDF document text
    • http://prostotit.site/yorke_peninsula_fishing_reportbbkt1.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/qZdgcgh/word_crossing_addictive_lucky_word_crossing_games.pdfIn PDF document text
    • http://hyipinvest.site/puwajarukegosafixeluvufeme27pv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490128/normal_6035b44edcb79.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/Omhboij/simabofitezuleni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dunugamufaj.epizy.com/39320159856.pdfIn PDF document text
    • http://nitumajalu.epizy.com/94199515834.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/hp_12c_mortgage_calculator_instructions.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB44 5496 bytes
SHA-256: 4b72d1a75602b2eb403b138700d8b667c150e71365cca51e458ee947230a2a44
font_01_sfnt_off0000edf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF0 10184 bytes
SHA-256: f7bc3a4471f6a5587f21b655136a3a1217229cbe91132caedb6a59e840c23aba

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