Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2d8ba4513e7851…

MALICIOUS

PDF

80.3 KB Created: 2021-03-06 10:41:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b9f48ea82769c77533ce8837dc7589c0 SHA-1: 1fd54ce9e5f912dfe2e62486b810c534cb98f116 SHA-256: fe2d8ba4513e7851d1119353f1283628ab53490014f586bfb14476113962ed00
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://pelibifir.ru/strik?utm_term=how+to+disable+text+selection+in+wordpress PDF link annotation
    • http://puzexijabin.mypressonline.com/define_invisible_mental_illness.pdfIn PDF document text
    • http://gloslides.com/sobebusewafipozh0pic.pdfIn PDF document text
    • https://cdn.sqhk.co/mojubemuwek/QuwjhMa/kipebuzamiwa.pdfIn PDF document text
    • http://liketime.online/zipesoalz3q.pdfIn PDF document text
    • http://raisinsapp.pro/3130208597680thq.pdfIn PDF document text
    • http://deutschebank-meine.com/91379734189dadvt.pdfIn PDF document text
    • http://best-store.club/anatomia_y_fisiologia_del_nervio_facial9lzmj.pdfIn PDF document text
    • http://lady-bug.club/birthday_images_for_nephew_freesc9s2.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/biG2gjc/bupulapam.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/56335061762.pdfIn PDF document text
    • http://kovuzaxaf.medianewsonline.com/87335982392.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/why_is_my_frigidaire_fridge_not_cooling.pdfIn PDF document text
    • https://cdn.sqhk.co/tulazofava/gk5ibGT/96980899313.pdfIn PDF document text
    • http://mon-cmso.best/world_class_1_student_book_free_downloadxkyqq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofadekiwi.rf.gd/naruto_blazing_ninja_road_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e77c49-2930-4aec-be7a-a8b77dae433b/how_to_import_goodnotes_templates.pdfIn PDF document text
    • http://fozixomu.epizy.com/guzivafijodegafusisajolav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e6ef921-d726-4fc6-8324-bbfdeb6b22e3/black_and_decker_jigsaw_user_manual.pdfIn PDF document text
    • http://dovabaz.epizy.com/fire_safety_plan_template_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faf055ee-56c6-4cf7-aaf7-aae455e00caf/how_to_work_a_sewing_machine_singer.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C4 5328 bytes
SHA-256: 49bfa2571c861d50eaebb78d4992ae93790ccab7e6c5f15b1afafb1401d9e19c
font_01_sfnt_off00010afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFD 11532 bytes
SHA-256: 177a6c3c9da7ed2bf42b09717efadcbdd41ce038f28301ba9dddf5e7e4c4fe08

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