Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f0772b906fd287…

MALICIOUS

PDF

75.2 KB Created: 2021-02-23 01:07:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d4250da2535cd17c4d38d3fe1cfcac83 SHA-1: 26245c6103e3c355889a34086ef9fe8c847d2553 SHA-256: 39f0772b906fd287ad5aafe83f72bcb3e0feeb62ab9fcae4c64e9e6657535f4c
146 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
  • 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://baarspo.ru/wix?keyword=fortnite+code+generator+xbox+one PDF link annotation
    • http://techanomic.com/luggage_size_guideu9dsk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_5fd9f581c1061.pdfIn PDF document text
    • http://baranaydin.org/ti_nspire_cx_cas_how_to_install_gamessv2w5.pdfIn PDF document text
    • http://love-cosmetics.shop/447536810393itp0.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/jakgchj/feudal_japan_martial_arts.pdfIn PDF document text
    • http://blaugrana.ru/8524029590615m6g.pdfIn PDF document text
    • http://kinokaiff.space/tascam_cd_rw900_mk2_review1ou7w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407756/normal_5fe1644091a24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388050/normal_60279a3fd4b99.pdfIn PDF document text
    • http://yozi.store/82193155241hok9m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496014/normal_5fd81681e75c9.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/vibasujefir/assets_android_get_file.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/aircraft_engineer_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/81088847317.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/git_commands_to_push_code_to_new_repository.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_off0000e974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE974 5060 bytes
SHA-256: bdd84e402ebbb9bbbba03faf5ad8da4ad54ec21d3c89b4a608b919401de0f598
font_01_sfnt_off0000fabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABE 10984 bytes
SHA-256: 56bfd9d1dda03ffd137f8d2ef3b646bba54d149a9611d17e71534b17c7edd7d9