Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7d29d573c4883eb…

MALICIOUS

PDF

75.2 KB Created: 2021-04-05 12:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a46419354056382cc6b19d44906bdc9b SHA-1: 128d11d598562a2fa7eb6caee70f0cb3d808e1ff SHA-256: f7d29d573c4883eb46a66ab9934af69c018991a452bd21711d501c9d7e140959
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 0.9991

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 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://leonvi.ru/award?keyword=amalgamation+accounting+problems+and+solutions+pdf PDF link annotation
    • http://dwatches.site/importance_of_randomness2jr50.pdfIn PDF document text
    • http://gratoramaa.space/world_war_in_pacific_fps_shooting_game_survival8zkgn.pdfIn PDF document text
    • https://wugumelejemumaj.weebly.com/uploads/1/3/5/3/135324079/6411638.pdfIn PDF document text
    • https://pafediroloz.weebly.com/uploads/1/3/1/3/131379748/5616a8.pdfIn PDF document text
    • http://life-news.tech/15990976179g8uce.pdfIn PDF document text
    • http://sarkife.site/sizalizeganedonososrefm5.pdfIn PDF document text
    • https://sezijaxafiv.weebly.com/uploads/1/3/1/6/131637080/3718910.pdfIn PDF document text
    • http://pijakonojimuw.iblogger.org/bible_history_books.pdfIn PDF document text
    • http://povarususev.22web.org/17022416539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425916/normal_5fcb2d2e4e4da.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/mention_the_generic_structure_of_recount_textljcf6.pdfIn PDF document text
    • https://gawotajar.weebly.com/uploads/1/3/4/5/134525297/lukana_waxadunak.pdfIn PDF document text
    • http://raisinshub.club/60384219227wpfcr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_60400b7aacf50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_5fd142a8e7401.pdfIn PDF document text
    • http://topfrag.rip/baidu_maps_app_android45hw6.pdfIn PDF document text
    • http://drive4mclaneaustell.com/39745329998y5t8w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388173/normal_605bc53aab0a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475391/normal_602c4af52e8ac.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/kisimujuk/zazigogaboxexelemuli.pdfIn PDF document text
    • http://zabipir.rf.gd/sokewasatovupiribosuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/2015_toyota_avalon_limited_manual.pdfIn PDF document text
    • http://vovajixavago.epizy.com/regatizugijozosodo.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/saki_saki_full_video_song_hd.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_off0000e79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 5604 bytes
SHA-256: e3b2b247e5b1ec37686d9b386a803b8218dec55c6014d89f71db8352c84128b6
font_01_sfnt_off0000fa8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA8A 10628 bytes
SHA-256: 791402fc2215061fd8fffd4629c041ede3941818a8fb04abac1b1b7b0d83db04

Open this report in the interactive analyzer, or submit your own file for analysis.