Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd4b7dc3c7e759f…

MALICIOUS

PDF

71.5 KB Created: 2021-02-19 13:12:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: fcb19d5f0ad8799cb1d2c2c502195fa7 SHA-1: 328247ced4fc300258456b1d33361bbcb208b33c SHA-256: 2fd4b7dc3c7e759fad9aecb2f5d982276c270f84292a6eccbd2a60500d267551
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=steam+wallet+hack+tool PDF link annotation
    • http://frontglass.xyz/9029558098onkzr.pdfIn PDF document text
    • https://mojivuza.weebly.com/uploads/1/3/0/7/130775228/6eef9072aa.pdfIn PDF document text
    • http://good-production16.site/29983637947uxnp1.pdfIn PDF document text
    • https://leruvipox.weebly.com/uploads/1/3/5/3/135347136/57635.pdfIn PDF document text
    • http://universityru.fun/electromagnetic_field_theory_fundamentals_solution_manual_guruaujgg.pdfIn PDF document text
    • https://cdn.sqhk.co/puvijupem/ifhiYjd/realistic_shaders_for_minecraft_pe_apk.pdfIn PDF document text
    • https://nipukidifa.weebly.com/uploads/1/3/0/8/130873732/kelalofa-zavebujovedik-tekimepamoj-xunizub.pdfIn PDF document text
    • https://sebinegovana.weebly.com/uploads/1/3/4/0/134095930/wewigubodelu.pdfIn PDF document text
    • https://xipurewaxo.weebly.com/uploads/1/3/4/7/134759043/7822713.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/BfXggge/pokemon_heart_gold_nds_download_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xifidoragu.rf.gd/68840510435.pdfIn PDF document text
    • http://mapupove.rf.gd/vpn_master_unlimited_vpn_proxy_free.pdfIn PDF document text
    • http://valamujunitun.epizy.com/49287502921.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_off0000dd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD71 5024 bytes
SHA-256: d0f3613760fc0654ee17d1cc0fbc7f53450d618a0bb91938c4e540c04017c1d5
font_01_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 10236 bytes
SHA-256: 608211585da488e82e42752438b9cb4db0bb0d80eaff5f5d84648c747a03ad1b