Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c89a7892f15784…

MALICIOUS

PDF

77.7 KB Created: 2021-03-24 21:11:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 12224636e9310d1e658ba54eeb59bc3c SHA-1: dd7d1029c812a6810650cbb507a6266b94ee992e SHA-256: c2c89a7892f157841b75d1a53a45b3e8523872ca25f287cfa3ceb8dce439b32b
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/123?utm_term=tvheadend+setup+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387702/normal_6023e5c58f0bd.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/igNu1N5/media_markt_gutschein_osterreich_kaufen.pdfIn PDF document text
    • https://cdn.sqhk.co/zeboxuze/CgfUlhg/8516881661.pdfIn PDF document text
    • https://woteginawewe.weebly.com/uploads/1/3/1/3/131379999/2dde1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_6057bf7f64be1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_60385b48b9021.pdfIn PDF document text
    • https://woduluzotuni.weebly.com/uploads/1/3/4/3/134373450/3175578.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/hhgdwhj/cash_frenzy_slots_casino_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472188/normal_602aed26f3a3a.pdfIn PDF document text
    • https://cdn.sqhk.co/zirevazul/eZe3idP/vuxalewinemomakebidine.pdfIn PDF document text
    • https://novufetus.weebly.com/uploads/1/3/4/1/134131343/91ee7ca3cdde0f0.pdfIn PDF document text
    • https://cdn.sqhk.co/dubibuwa/2DhgJuo/ultimate_racing_2d_review.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/7jjgghg/nosoz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7fdfc1-a050-48f3-8951-647f3daf3bc1/vusukemawofozole.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/how_much_does_an_oil_change_cost_take_5.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/24144874373.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/dasoson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4617d32-1736-4bd9-9d0f-18c14891fd46/central_route_to_persuasion_ads_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/935aa259-63de-4673-9825-58506eaaa079/best_soccer_drills_for_10_year_olds.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/kotosi.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/faded_piano_sheet_music_full_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d270b4c-5423-44f7-b689-f8977dbb774c/motorola_mc55_reset_to_factory_defaults.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_off0000f359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF359 5100 bytes
SHA-256: 409fb14565fc4ac0bd13ee47a0ac0bf577596147cf5817e2635baad1b5157583
font_01_sfnt_off000104bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104BC 10812 bytes
SHA-256: c758192da2b2291cb548f499ca0b4657152a8ac9c7181afe05081301a548fa72

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