Malicious PDF — malware analysis report

Static analysis result for SHA-256 712d454403ca7e16…

MALICIOUS

PDF

117.4 KB Created: 2020-08-01 17:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb34a4f870fed714287ac2001671f8ba SHA-1: 02252e8189f6d6d81975db930532edfcd21c1c4e SHA-256: 712d454403ca7e1627c4a534bc4ecf23cfd327bde9b68bef4eadce3cc8c7ac9c
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document body also contains the same URL, suggesting an attempt to trick users into clicking it. The presence of numerous other PDF links further indicates a link farm or redirection strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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://ttraff.ru/pify?keyword=roblox+troll+script
    • http://files.danhalpernmusic.com/uploads/1/3/0/8/130814078/4fae533f7d74.pdf
    • http://files.veteranchildren.com/uploads/1/3/1/6/131606951/fekajotidafexa_pipezegiwa.pdf
    • http://files.rascalmartinez.com/uploads/1/3/0/7/130776826/373f29251619ace.pdf
    • http://files.melissamasonphotography.com/uploads/1/3/1/6/131606174/pimefivanat-bobazalajo-wemilifes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6193/6285/files/32205785211.pdf
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/34193589750.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/sesofevasavufaxaderibilid.pdf
    • https://cdn.shopify.com/s/files/1/0438/0806/3649/files/ginunofefari.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/wizerufekibigavakuxufukuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/sekiro_hidden_tooth.pdf
    • https://cdn.shopify.com/s/files/1/0436/4192/9886/files/pidalulukovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/26860588608.pdf
    • https://cdn.shopify.com/s/files/1/0438/9172/0347/files/76643189424.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/3835499403.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/48313599668.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_off0001825b.bin
886e4278107477e0bc151f15bf8763836cefe2bdd2e1e7c0b4edc19464b5b1b8
pdf-font-stream PDF embedded font (sfnt) at offset 0x1825B 4932 bytes
font_01_sfnt_off0001933c.bin
30dd519f02f1eb398952669d0307da748c6dffd74e847466fd23f4142344412c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1933C 16968 bytes