Malicious PDF — malware analysis report

Static analysis result for SHA-256 219feec5ce360a94…

MALICIOUS

PDF

97.8 KB Created: 2020-11-26 03:21:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a9b0908abc0d62775ec6a34110ecd58 SHA-1: 4f85189adf76230ffcf8d63bee3c65ad073361f8 SHA-256: 219feec5ce360a940a282075623666407edeb84a9405d238315895fddd90b1bb
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, including a critical finding of a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to reference a 'Dewalt dxaeps2 manual', suggesting a lure to disguise malicious links. The presence of many PDF links and a critical heuristic firing for a redirector link strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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.
  • 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://ggtraff.ru/strik?utm_term=dewalt+dxaeps2+manual
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5f9117ce2219c.pdf
    • https://zijananuwale.weebly.com/uploads/1/3/4/4/134438714/0ebd7c.pdf
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/wutebixevelum.pdf
    • https://jivoxafur.weebly.com/uploads/1/3/4/3/134382284/kuxivi-zefen-tujinejowuk-dexovopuba.pdf
    • https://tapojofam.weebly.com/uploads/1/3/4/5/134518610/1456834.pdf
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/1665152.pdf
    • https://cdn-cms.f-static.net/uploads/4374002/normal_5f943d832cc5a.pdf
    • https://cdn-cms.f-static.net/uploads/4482854/normal_5fb9db24cc610.pdf
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f8733b22c91f.pdf
    • https://cdn-cms.f-static.net/uploads/4425229/normal_5f9765a433019.pdf
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/e451c4d73342c3.pdf
    • https://cdn-cms.f-static.net/uploads/4465394/normal_5fac07478ec2d.pdf
    • https://xovatikawe.weebly.com/uploads/1/3/4/7/134726086/wafaribikova-xubotikomabana-zitanaxedaga-wukagogajuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/79e66007-f443-4dff-b9ed-e4941ec650ff/spelling_greek_word_parts_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/8f49c47d-c6e4-4eb5-8aa6-a2f74ce49c6f/34932839837.pdf
    • https://s3.amazonaws.com/jeromopelurab/map_metro_milano.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNU
    • http://www.gnu.org/copyleft/gpl.htmRegular

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000130c4.bin
1444442f170b3b8e89baf448cab4b1639a6be452d214fff1e6473cd07afbeeba
pdf-font-stream PDF embedded font (sfnt) at offset 0x130C4 5300 bytes
font_01_sfnt_off000142d4.bin
d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
pdf-font-stream PDF embedded font (sfnt) at offset 0x142D4 3720 bytes
font_02_sfnt_off00014e38.bin
fb0c09086b4ad82a27850c1d9e7d5541863a2670fb9516965b9ac11d31ce32a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x14E38 12804 bytes