Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6bad7313c984a3b…

MALICIOUS

PDF

79.5 KB Created: 2021-02-14 01:53:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9cdac3249025304df2767f4ff76b5350 SHA-1: 208d9b33b0901c69c523c59a747b3c8d958441f9 SHA-256: f6bad7313c984a3bfbe6a419ce0e9ff025ab8ed5569c5f81f67a7c4db9d89916
204 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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/123?utm_term=pa+photo+license+center+frazer In PDF document text
    • http://barcaporirternet-interbank-pe.com/video_downloader_browser_for_iphone7j1jq.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/gyXhigd/bomesiwogevib.pdfIn PDF document text
    • https://cdn.sqhk.co/nixivezez/Tuhe0xL/vodafone_net_pack_online_recharge_chennai.pdfIn PDF document text
    • http://latencfsrt.space/civil_war_pictures_of_dead_soldiersa7w56.pdfIn PDF document text
    • http://meetsoda.club/vavubituritekuwojogif78xtk.pdfIn PDF document text
    • https://sulezesolujoseg.weebly.com/uploads/1/3/1/4/131452841/1301ff427436.pdfIn PDF document text
    • https://rojanekawuveruj.weebly.com/uploads/1/3/1/3/131380666/bb4978cadbf.pdfIn PDF document text
    • https://pekixutub.weebly.com/uploads/1/3/1/4/131453658/daxukusafi.pdfIn PDF document text
    • http://rodina38.ru/bhakti_gana_2019hbv6x.pdfIn PDF document text
    • https://xatevixi.weebly.com/uploads/1/3/4/6/134651360/1fb89.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafixatoje.epizy.com/16496262490.pdfIn PDF document text
    • http://jusaxokipumata.rf.gd/accp_guidelines_atrial_fibrillation.pdfIn PDF document text
    • http://gurevetafajes.epizy.com/incra_mast_r_lift_ii_manual.pdfIn PDF document text
    • http://lufadavebu.epizy.com/95051151317.pdfIn PDF document text
    • http://xafinuj.epizy.com/minecraft_default_skin_template.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_off0000fa41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA41 5152 bytes
SHA-256: e2cf82f737795c7cb0b390cafd7c1c85768cda05662b809df7da370552a25aa3
font_01_sfnt_off00010bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BCC 10976 bytes
SHA-256: d79044d7fd7a5900e28ba40a0ab90fccd938bedcecb301211d81129b7bd32c7f