Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a1faf5bb48eb8a…

MALICIOUS

PDF

69.0 KB Created: 2021-06-01 19:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d40b4b6c3dd2792de819d0f8a812afad SHA-1: ca75b4fa9904d8fd06563de1396de768900ce059 SHA-256: 09a1faf5bb48eb8aea411f4bdb2035a7616cf341ca3e384c4180fa4b660fd0bb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs and heuristic firings indicating it's a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The presence of a URL with 'baaghi+2+full+movie++mp4+sabwap' in the query parameters indicates a lure for pirated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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=baaghi+2+full+movie++mp4+sabwap PDF link annotation
    • https://ziridizozavixik.weebly.com/uploads/1/3/4/4/134400570/ninizo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_60288d91153e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455196/normal_6036d003de5e9.pdfIn PDF document text
    • https://gapulujazupimes.weebly.com/uploads/1/3/4/7/134775062/e5b87df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_606a190edff8a.pdfIn PDF document text
    • https://nekarima.weebly.com/uploads/1/3/4/8/134876173/zofukali.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikasamu.pbworks.com/f/90517118196.pdfIn PDF document text
    • http://wixugigir.pbworks.com/f/32056927732.pdfIn PDF document text
    • http://gitefov.pbworks.com/f/memanexexisevekaxovas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/add39beb-0b66-4e0c-b872-ab408f05311b/dragon_castle_books_las_vegas.pdfIn PDF document text
    • http://xutosop.pbworks.com/w/file/fetch/144462510/33398673680.pdfIn PDF document text
    • http://zikasamu.pbworks.com/w/file/fetch/144432246/lenefibaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/894c342d-737e-4622-855c-3a7155a4fb29/6_week_preseason_training_program_football.pdfIn PDF document text
    • http://noxixap.pbworks.com/f/actividades_de_lectoescritura_para_nios_de_segundo_grado.pdfIn PDF document text
    • http://finebov.pbworks.com/f/zuxetikosenugoji.pdfIn PDF document text
    • http://poxanoralanu.pbworks.com/f/dressing_up_adverbs_worksheet_1.5_b_answer_key.pdfIn PDF document text
    • http://negaboxa.pbworks.com/w/file/fetch/144453171/fast_food_restaurant_business_plan_sample.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_off0000cf22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF22 5780 bytes
SHA-256: 795f97706d85cdeb1074baa12f40584f84d575a22b8da18f7fb8f95e44499ce5
font_01_sfnt_off0000e2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D5 10588 bytes
SHA-256: af1d3241529c2197f952727b4f26b85b0da3c3660a2176e3ce40db98c9f3e9f4

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