Malicious PDF — malware analysis report

Static analysis result for SHA-256 796b098b710fe33c…

MALICIOUS

PDF

66.8 KB Created: 2021-03-31 01:35:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 93ff107cf32c889769fdc679af04b41d SHA-1: b16b6f0e0ad6d8d057dd9903686575b0fda184b9 SHA-256: 796b098b710fe33ce1f8ab3fce70c9720714e7a0ce549567e46a93c36a0d44f6
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.7888

Heuristics 4

  • 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
  • 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://crophysi.ru/123?utm_term=vans+platform+slip+on+checkered PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421342/normal_600addee2d595.pdfIn PDF document text
    • https://zuvigopujipo.weebly.com/uploads/1/3/0/9/130969218/beguwekefabikab.pdfIn PDF document text
    • http://scoretdho.best/limuzolaxeforrqdn2.pdfIn PDF document text
    • https://ruvutitijo.weebly.com/uploads/1/3/4/8/134883381/lanalataxut.pdfIn PDF document text
    • https://tazumeter.weebly.com/uploads/1/3/1/4/131438167/841eb39a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528780/normal_601af92dc5eb5.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/96608598721.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/amplified_bible_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dofofigeniso/e3Qiihf/cookie_clicker_cheat_codes_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nuduniguwufo/FIIjbT4/23483269704.pdfIn PDF document text
    • https://zuwezulexexufup.weebly.com/uploads/1/3/4/5/134582503/wujubol.pdfIn PDF document text
    • http://idealica-italy.site/milady_chapter_14_review_answers81jab.pdfIn PDF document text
    • http://vezerfa.xyz/the_republic_steakhouse_dress_codeds3a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453551/normal_5fc5ab6b194fd.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosobupis/xbjfogd/valiant_mobile_app.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/jcgegfZ/reviews_of_adventure_island_tampa.pdfIn PDF document text
    • https://vutavapurazamo.weebly.com/uploads/1/3/4/6/134643269/butajegali.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/b4985113-d016-4ff3-b65a-adc9c1248ce6/50541990727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a230d6b1-f387-4c32-ba3e-8508e6b65c5e/ncaa_division_2_teams_basketball.pdfIn PDF document text
    • http://pasifowon.atwebpages.com/95038905625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29399fd4-eaeb-4536-8419-0245ecbf04da/nerve_conduction_velocity_test_near_me.pdfIn 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_off0000c8f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F3 5424 bytes
SHA-256: 80a19a6f9b3e05c86f7f53f7b166651fd299362accbe9407e4bb3be08bed75e3
font_01_sfnt_off0000db3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3C 13784 bytes
SHA-256: 3de92a2d0d8bec90a99a52447c7336fa58c1ab9ce9942dee943dec9aab569d35

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