Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a099ec5a7fe68a0…

MALICIOUS

PDF

67.3 KB Created: 2021-02-18 00:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5d2c4782cbfc7d5fda8e1aebf9b2aa44 SHA-1: be6f41d23672bbd49d0d2f7af5a4dc02fed925b3 SHA-256: 8a099ec5a7fe68a03868ce20463462992517406e7329db3073b379c9d23b2760
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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/123?utm_term=2004+chevy+malibu+alternator+price PDF link annotation
    • https://cdn.sqhk.co/talurelope/7rLii0o/car_driving_school_2020_game_mod_apk.pdfIn PDF document text
    • http://rollernefritmassage.xyz/asphalt_8_airborne_pc_sizenzhdp.pdfIn PDF document text
    • https://cdn.sqhk.co/tadanopi/pnjiFvl/54905845752.pdfIn PDF document text
    • http://mavpa.fun/24604837124i41nb.pdfIn PDF document text
    • http://ebay-coupon.ru/92099902922oo6k1.pdfIn PDF document text
    • https://cdn.sqhk.co/bijilixiger/gfkih6Z/callaway_golf_stock_price_target.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/jQwXjb7/bmc_buckets_facebook.pdfIn PDF document text
    • http://bella24.xyz/rowapaxcpo5.pdfIn PDF document text
    • https://cdn.sqhk.co/buzivafulet/jhahihj/bexakuliruvar.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/iWtT706/81856712097.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/9718591.pdfIn PDF document text
    • http://idealica-ituficiale.website/10176520231arnbc.pdfIn PDF document text
    • https://www.carpartIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/26292321802.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/rovonis.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/ecg_interpretation_quiz.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_off0000c7f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F5 5564 bytes
SHA-256: 10f8ff06881e9e2fe9e96efc2191004b2b114fc9a0a0704bd641b0358218ce61
font_01_sfnt_off0000dabf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABF 10816 bytes
SHA-256: f8b6fb09615f9507372409f7f28d27d5ef347af70f19d2a584ca273f2e2d947e

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