Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0b3e1a4ebefcb1…

MALICIOUS

PDF

65.2 KB Created: 2020-11-26 08:11:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ead190a629767346136d51692af9a2ea SHA-1: 74563c8b70dda48d7fd37a522ef0988d911f534d SHA-256: 9d0b3e1a4ebefcb148b0d235821c2d6403dfe96a4652a4ec6a76972fad58420f
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to textbook answers, suggesting a lure. The presence of a malicious redirector and a large number of outbound links indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/strik?utm_term=imaginez+3rd+edition+textbook+answers
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5fac38c307c05.pdf
    • https://cdn-cms.f-static.net/uploads/4450047/normal_5f9efbd2bbbb1.pdf
    • https://cdn-cms.f-static.net/uploads/4408991/normal_5fa285c94f51d.pdf
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/2fb1c1cf7e39.pdf
    • https://kidudowo.weebly.com/uploads/1/3/4/3/134318554/4894628.pdf
    • https://cdn-cms.f-static.net/uploads/4388174/normal_5f8e980b06599.pdf
    • https://cdn-cms.f-static.net/uploads/4423427/normal_5f9a80ad9f50b.pdf
    • https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/pinumupoduzov.pdf
    • https://naziwimirup.weebly.com/uploads/1/3/4/3/134371197/a71c4097d7b.pdf
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f9d5cf847b81.pdf
    • https://xatomurukazaj.weebly.com/uploads/1/3/4/3/134378662/mizamojubifejo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2f1c3de1-b08b-4706-992c-ef52655054c5/sudegetodazodanokuvedaz.pdf
    • https://s3.amazonaws.com/buxoparadazegu/valkyrie_profile_lenneth_android_apk_free.pdf
    • https://s3.amazonaws.com/xefejevife/comment_lier_plusieurs_en_un_seul.pdf
    • https://s3.amazonaws.com/xoxaneral/minecraft_afk_fish_farm_auto_clicker_bedrock.pdf
    • https://s3.amazonaws.com/vuxalirudidel/dekaga.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be6f.bin
c1a0a9051f56387a739d5e9c8704fa1f12ca4e092c72a3a8b8a33fdef708d800		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE6F 5628 bytes
font_01_sfnt_off0000d1a1.bin
a6f3eb0392a1166c4c970ed8a0f9daf0f299b5369116753560d5179ac7c4c41a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A1 11408 bytes

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