Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe4fbfb257b3067…

MALICIOUS

PDF

73.5 KB Created: 2021-02-12 02:05:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a70bec77a03ed306a70f870ad62165c6 SHA-1: 522016816df499c843944696367f28f512c319ea SHA-256: 2fe4fbfb257b30674acdd35e4217b6603232a0e20d9a338742a9d6389d113687
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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.
  • 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://seumenha.ru/123?utm_term=intermediate+tool+chest+home+depot PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426072/normal_60247840d6f8e.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimanujage/ajffWWc/guvawemazib.pdfIn PDF document text
    • https://xigolomo.weebly.com/uploads/1/3/4/4/134483438/6194156.pdfIn PDF document text
    • http://lirerigoteses.22web.org/beverage_production.pdfIn PDF document text
    • https://cdn.sqhk.co/topazawu/eNiggdO/bakis.pdfIn PDF document text
    • http://flipping-car.online/8136473789cxqzr.pdfIn PDF document text
    • https://zofifonanofanap.weebly.com/uploads/1/3/4/8/134876640/2807c8f.pdfIn PDF document text
    • https://raxuzorozejataw.weebly.com/uploads/1/3/4/0/134042373/tedajasud.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/jggbVSd/24334945137.pdfIn PDF document text
    • http://agent-ritual495.online/auctiontime_results_trucksi1ngt.pdfIn PDF document text
    • http://eu-study.ru/basic_communication_skills_ppt_free9gmit.pdfIn PDF document text
    • https://befewegumezozem.weebly.com/uploads/1/3/1/4/131453636/023708.pdfIn PDF document text
    • http://support-copyrighthelpservice-about.com/armour_of_god_daily_prayerfc63z.pdfIn PDF document text
    • https://cdn.sqhk.co/kukelagalefe/dQhighj/elder_melder_guide_alchemy.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/y4mTnhj/zenonia_5_hack_apk_offline.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/fomaralunex/botany_view_hotel_gig_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/abcd_film_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/sap_homogeneous_system_copy_guide_windows.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_off0000e3ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AC 5248 bytes
SHA-256: 8600b3bd0cfa80b4e157adf6e6798a35e5ede2a562eec7ea7915bfc59fe76f1b
font_01_sfnt_off0000f54e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF54E 10528 bytes
SHA-256: 21a1e953932737c2cf895f4636b71e5554390b8e2e412d0c3dfb797de6bbcc72