Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f7f26abe674bee9…

MALICIOUS

PDF

62.5 KB Created: 2021-02-05 13:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73cb55030378785b73021ad57763134d SHA-1: cd2e42ff1760f2f53125a8dd2c5541b8c1defa2c SHA-256: 9f7f26abe674bee947be2475af5ef07274dffab6416f71f06529b9947dbf47e5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=macroeconomics+parkin+10th+edition+pdf PDF link annotation
    • http://tajeromodovo.66ghz.com/35486633596.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/L4jcvb9/banizogananaj.pdfIn PDF document text
    • https://cdn.sqhk.co/kejaxedusuk/d7ZhgWw/88764891264.pdfIn PDF document text
    • http://future-techno.ru/victoria_beckham_clothing_size_guide5aev2.pdfIn PDF document text
    • http://dedevolopi.iblogger.org/pegegidirev.pdfIn PDF document text
    • https://lepepapiminokuj.weebly.com/uploads/1/3/4/4/134493398/da20c.pdfIn PDF document text
    • https://natevifenug.weebly.com/uploads/1/3/5/9/135986161/lewadatiro.pdfIn PDF document text
    • https://komuwewolidixat.weebly.com/uploads/1/3/4/8/134871085/e356cd7a493c628.pdfIn PDF document text
    • https://pidowiwosuzaji.weebly.com/uploads/1/3/0/9/130969191/xetesedikeges-kekekiz.pdfIn PDF document text
    • https://katopogovalasa.weebly.com/uploads/1/3/5/4/135401177/8047398.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/iao3Fh6/41592914078.pdfIn PDF document text
    • https://tivufele.weebly.com/uploads/1/3/4/6/134615601/muzebodabusaxodopa.pdfIn PDF document text
    • https://wisenuru.weebly.com/uploads/1/3/1/8/131856959/sidivibom.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/wemazun/farming_simulator_18_apk_obb.pdfIn PDF document text
    • http://mewexudidis.epizy.com/gunawodizodemavamudo.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/gajaxame.pdfIn PDF document text
    • http://xetulugesoboko.epizy.com/west_highland_white_terrier_grooming_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/hardee_s_nutrition_guide.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_off0000b741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB741 5628 bytes
SHA-256: 2fba36bc046c3bad6efb23f4d88e9e4776c111259abd30a1a1ea11723f1b9546
font_01_sfnt_off0000ca4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA4C 10116 bytes
SHA-256: 265906eec3da87fc05278685b86f517c6bd041565979a9af2ec33da5c424eeb1

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