Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c1b257ed446b96…

MALICIOUS

PDF

67.7 KB Created: 2021-02-28 11:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9aeca8f5296be73276b58eb9b78508b4 SHA-1: f0bb4369e43bd5eab6f2b32b0e1e6360fe8e9d64 SHA-256: 47c1b257ed446b9656abff8d5aa4ca5e2396c536f7fae2c7aa9f23d9212fcd96
186 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 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.
  • 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://resalured.ru/award?keyword=i%2527ve+finally+found+where+i+belong+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487631/normal_5fdc81f5b5f2b.pdfIn PDF document text
    • http://nusoxex.iblogger.org/cant_install_office_2007_on_windows_10.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/navy_advancement_center_cpo_results.pdfIn PDF document text
    • https://zazalefofano.weebly.com/uploads/1/3/4/5/134578352/nijitasoxabozunup.pdfIn PDF document text
    • http://vuvezalamosi.22web.org/gb_whatsapp_version_8._0_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415748/normal_600dff98eac90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_6011db0c94ee8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444369/normal_5ff33d3d0176e.pdfIn PDF document text
    • https://mavakonagidesa.weebly.com/uploads/1/3/1/4/131483278/befise.pdfIn PDF document text
    • https://nusupubibirimu.weebly.com/uploads/1/3/1/8/131871553/5c1f936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377647/normal_5fdbe12ef2fa2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xetumerim.rf.gd/graco_jogging_stroller_folding_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/chandelier_cad_block_plan_free.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/aja_ki_pro_ultra_plus_4k.pdfIn PDF document text
    • http://venakato.epizy.com/newsela_answer_key.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_off0000cccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCF 5648 bytes
SHA-256: ee28435518c0ad3ec1067aeacd3b3f5f9ea2c2204e88acadbcd1abb3f9a67f1b
font_01_sfnt_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 9892 bytes
SHA-256: f452e7698f43d9eb3235592cc964801550f65159e8fd5fade5b2a821e98c1398