Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1ca7fade1d2966…

MALICIOUS

PDF

71.7 KB Created: 2021-02-11 14:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9310355ce437a6821b1e242625f10410 SHA-1: 8edd9eac9a9d2f1ecb48f7841a72d83d65999d84 SHA-256: 6b1ca7fade1d2966779c38e0bd1678b01598484f70560de4bb8cbfd1bc764b05
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://maypoin.ru/aws?utm_term=arson+sentencing+guidelines+in+california PDF link annotation
    • http://feldhaus-klinker-plitka.ru/electrolysis_worksheet_gcsej3meg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462056/normal_60171f271f8e8.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/jhEggje/vunenepuwinevologegakom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403684/normal_5fe0c1ec31596.pdfIn PDF document text
    • http://girlsbeach.space/wofamelexemodejilba8g.pdfIn PDF document text
    • https://cdn.sqhk.co/sirojenu/ajbQl12/game_of_sultans_viziers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411252/normal_601da3730ad69.pdfIn PDF document text
    • http://strita.space/mudelijuxusipibimavowupop9ko41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481170/normal_6021f8cee5fc5.pdfIn PDF document text
    • http://olx-delivery.cc/daggerfall_guideai8xf.pdfIn PDF document text
    • http://lnstagram-office.com/elite_motors_inc._kennesaw_ga_30152y9km2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459163/normal_5ffb39e5a5dcc.pdfIn PDF document text
    • http://antonioit.fun/cgp_a_level_biology_revision_guideg9o9y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wetevali/3044376934.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/paper_laminate_sheets_for_furniture.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_off0000dcbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBC 5180 bytes
SHA-256: 1eab609b073bd1d330de0b92e24af9ea53f94d83b945706368e47848b608ed1c
font_01_sfnt_off0000ee6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6B 10392 bytes
SHA-256: 164eee5d79440ee99da085c5e809f4b315682f61e6db259a089a146e795114b0