Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60a7465a8f5ba00…

MALICIOUS

PDF

78.7 KB Created: 2021-02-20 06:54:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c19a8324989b0a4dfd28d32d1375d2d6 SHA-1: a15fac33483546359e3d19b3c091929b6d3a272f SHA-256: b60a7465a8f5ba00b262053a603a5a9854564de5c105ada8c3b1db215a0de583
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=do%20you%20need%20to%20toast%20brioche%20burger%20buns In PDF document text
    • http://astropsychology.website/2277374991idvx1.pdfIn PDF document text
    • http://purpless.vip/9642064582mti7j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481278/normal_6028f97c07852.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470400/normal_5ff75c087ea37.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/cjijhdm/fazifi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456135/normal_60133b63d332d.pdfIn PDF document text
    • http://rte-ita.fun/45435758596jznsz.pdfIn PDF document text
    • http://4d-5d.com/90323473478g5281.pdfIn PDF document text
    • http://supernefritroller.xyz/imaginarium_mountain_rock_instructionstd9zy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_601a009712e06.pdfIn PDF document text
    • http://snapchat-alert.com/78189542390rdpzs.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/selivuvumepaveb/plague_inc_necroa_virus_strategy_guide.pdfIn PDF document text
    • http://mulotuzasokafo.epizy.com/pak_vs_afghanistan_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/maplelegends_horntail_guide.pdfIn PDF document text
    • http://nikejubefip.epizy.com/free_ppt_templates_for_business_plan.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_off0000f771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF771 5408 bytes
SHA-256: 098c7b1b1ecefb79dff5f449de52eb2804eb2d0bbc127a7b232ebd1e09f20dbd
font_01_sfnt_off000109da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DA 10612 bytes
SHA-256: 5afa9f2ad5545b3f5ba0802cd655f827a6fe8b4cf9d85c739e3a12f745c1b69c