Malicious PDF — malware analysis report

Static analysis result for SHA-256 111aaadf042fb5d8…

MALICIOUS

PDF

72.7 KB Created: 2021-02-23 22:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bd7004183521f1e5383ccb43548406b1 SHA-1: 68dd2cdfaa2218f085fa5d944c17c55129851f24 SHA-256: 111aaadf042fb5d8c65bbddc25440c9629da405be3b9705fc743e1eed0ad0e9d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=kinematic+equations+worksheet+with+answers+pdf PDF link annotation
    • https://cdn.sqhk.co/zoluxoni/fWEI37E/mike_v_skateboard_party_pro.pdfIn PDF document text
    • https://zetakopazo.weebly.com/uploads/1/3/5/3/135351561/wajarimewedeziro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_602a7d00ece10.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/jhhibLR/doon_defence_academy_admission_open.pdfIn PDF document text
    • https://nuniladolu.weebly.com/uploads/1/3/0/7/130775245/retirojamuxufanikid.pdfIn PDF document text
    • https://cdn.sqhk.co/sirejeforox/h1jwkhj/pofumojisibasadu.pdfIn PDF document text
    • https://fowemofuf.weebly.com/uploads/1/3/1/3/131379389/fukid-notawa-rulatikidofiwam.pdfIn PDF document text
    • https://lewuseloti.weebly.com/uploads/1/3/1/4/131437615/8325714.pdfIn PDF document text
    • https://kunimagim.weebly.com/uploads/1/3/4/6/134608209/zafolitevetito-gulexajamin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467576/normal_5fdee62f3db85.pdfIn PDF document text
    • http://gibejujefuguxax.22web.org/feworobuzaji.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/nOghhgR/used_car_calculator_malaysia.pdfIn PDF document text
    • https://jaluwaxigesife.weebly.com/uploads/1/3/4/6/134640648/c43e606324.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/jidagafinuxesu/54046954592.pdfIn PDF document text
    • http://vumafovixono.rf.gd/giweraramuzezurojodelur.pdfIn PDF document text
    • http://bategozejaxa.rf.gd/jibupogipixaba.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/work_experience_certificate_format_for_teacher.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_off0000d370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD370 5616 bytes
SHA-256: 8242aa1aaf647c225da16f8e037149337d2ad172ad2f846183211e83e72ebf1f
font_01_sfnt_off0000e66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66E 15140 bytes
SHA-256: 3d3705c74be6c17d391ff3222652ccdce847acb62a881fb5a498df7e5a8ee939