Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab2dbdc4d92c433…

MALICIOUS

PDF

197.6 KB Created: 2020-11-20 02:49:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25f42882ded555723a1cc151d1e202dd SHA-1: 7724b0814159c133537088a41c3aa0cab4dcc3b1 SHA-256: 2ab2dbdc4d92c433d8fb950b7c13976a20658274fe34e359306ea9008aaf24bb
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to known malicious redirectors, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier and ClamAV also flagged this file as malicious. The primary attack pattern involves luring the user to click on a link that likely leads to a phishing page or a further malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffmen.ru/strik?utm_term=captured+by+dark+elves
    • https://fimopokiwuzik.weebly.com/uploads/1/3/4/7/134736862/824167.pdf
    • https://zonuloxovuge.weebly.com/uploads/1/3/4/4/134469127/tupijunegivivus_nijudam_lewafesunod_tonepimakuzi.pdf
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/xivadonefokip.pdf
    • https://fifevogu.weebly.com/uploads/1/3/4/6/134602809/4424279.pdf
    • https://ribuborufexegax.weebly.com/uploads/1/3/4/5/134507127/vofixof_wapena_fowidopinaremu.pdf
    • https://zuvagenujak.weebly.com/uploads/1/3/4/4/134454716/7265986.pdf
    • https://palarijebatexo.weebly.com/uploads/1/3/4/3/134338538/c6169.pdf
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/ffc40040a9e2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zalomi/dimekofapixaporopaxavub.pdf
    • https://s3.amazonaws.com/nonipesikiri/bmw_2006_f650gs_owners_manual.pdf
    • https://s3.amazonaws.com/gogunabones/lutheranism_101_the_course_answers.pdf
    • https://s3.amazonaws.com/lixuduwonifa/orvis_watch_band.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002c24e.bin
af861e64ce6e1e3c9ee232f148dedfd2ddc701c858163e8962da710a5d78997c
pdf-font-stream PDF embedded font (sfnt) at offset 0x2C24E 4960 bytes
font_01_sfnt_off0002d34f.bin
826cc288750bc176c83fdf6e577fb6c30ca2566512b8648819b6560db3d59d29
pdf-font-stream PDF embedded font (sfnt) at offset 0x2D34F 11816 bytes
font_02_sfnt_off0002fa3a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA3A 4324 bytes