Malicious PDF — malware analysis report

Static analysis result for SHA-256 65e72bc8fb2f0e34…

MALICIOUS

PDF

67.7 KB Created: 2021-02-17 12:38:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 313771ae1684f6b42efaa0c25626a4fb SHA-1: 322c94b835cada9299865f206e2b9783bfc91060 SHA-256: 65e72bc8fb2f0e34f9c755d51cb22a6c6ee52d93674ea5e646c96c79a2443a37
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://bologen.ru/123?utm_term=how+to+use+rosetta+stone+on+ipad PDF link annotation
    • https://wolixakeju.weebly.com/uploads/1/3/6/0/136002716/bafotonukuris.pdfIn PDF document text
    • https://fasilusizewolas.weebly.com/uploads/1/3/5/3/135313848/954defb35c2706.pdfIn PDF document text
    • https://xujesosa.weebly.com/uploads/1/3/6/0/136090165/a1c94e345ce0c0c.pdfIn PDF document text
    • https://risixugetiso.weebly.com/uploads/1/3/5/3/135317557/fifuvizenozut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408720/normal_5fe3214ab8e9b.pdfIn PDF document text
    • https://vunepixas.weebly.com/uploads/1/3/1/4/131483778/e005c5f4.pdfIn PDF document text
    • https://xibixijuli.weebly.com/uploads/1/3/5/3/135399677/bekulubekiso-xobuvuja-nefej-tibunipasato.pdfIn PDF document text
    • https://cdn.sqhk.co/fabupiguboxa/R7RQibq/photo_effects_software_free_download_for_windows_7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fd6834518ea0.pdfIn PDF document text
    • https://xonuguzuv.weebly.com/uploads/1/3/1/3/131382030/9828415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490523/normal_60116d6cb19fb.pdfIn PDF document text
    • https://nelixifejesuvol.weebly.com/uploads/1/3/1/4/131406681/ca5d2b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410989/normal_5fdfd53194245.pdfIn PDF document text
    • https://kowedeta.weebly.com/uploads/1/3/0/7/130775164/7814121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pazalijof.epizy.com/nininenuw.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_off0000ccae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAE 4976 bytes
SHA-256: 2b79f59f50f01a0cda1753a2ca3eb14790ef2fd4c0417730ce370e5294580a9c
font_01_sfnt_off0000ddb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB6 10700 bytes
SHA-256: 0ca12482525f17e43be839cedc201d7fb818aa07bc88118338a18ff488e28700