Malicious PDF — malware analysis report

Static analysis result for SHA-256 532c3e6600bf6942…

MALICIOUS

PDF

70.5 KB Created: 2020-11-26 03:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9c418a6503bc135400471783a0e2b1ad SHA-1: 13b7a7059e4900b378c1985f28e6dbdede00e73e SHA-256: 532c3e6600bf69421c40674c35e5c6b4c520c8bdc65e5b616688af1e9b6d5ed7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 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.
  • 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://trafficel.ru/123?utm_term=casio+pathfinder+watch+manual PDF link annotation
    • https://fumumakol.weebly.com/uploads/1/3/4/0/134017799/duvenisijamit-pewopunalabot-puwada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413373/normal_5f9f6aca53a86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401518/normal_5f91558f2d1a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423136/normal_5f9a1eea566fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387938/normal_5f8f1badd04b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404723/normal_5fba662a1a807.pdfIn PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/d54325eb9785d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373983/normal_5fa17e238f4ca.pdfIn PDF document text
    • https://ruxapumuful.weebly.com/uploads/1/3/4/6/134682584/zosakewowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gixawetopoli/read_theory_analogies_2_level_12_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/27569749460.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/apple_app_store_apk_download_latest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cf248a8-5849-4d8f-9838-5dd40c6fac67/mekasasiwozotar.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/arnold_press_exercise_picture.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC84C 5392 bytes
SHA-256: ac4e6faf02c3b708771f893625c5051fda98674033e5a8fab08d02303dd9d877
font_01_sfnt_off0000da85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA85 10220 bytes
SHA-256: 437322bddf0e96c01128820b9665ce4da389ae22bd4464e962b3f423674fdf52
font_02_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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