Malicious PDF — malware analysis report

Static analysis result for SHA-256 0507d14b97a6776a…

MALICIOUS

PDF

112.7 KB Created: 2020-08-11 13:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59473e0cf7087a975839008a191d21fe SHA-1: b62bbce98b5568c568e675677a49744ce6b8750e SHA-256: 0507d14b97a6776af409f2a1f0c497a9d4a50c2097b8c9e76b9a533aa44b9398
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=aves+de+rapina+hq+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious content. The ML classifier strongly supports the malicious verdict.

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=aves+de+rapina+hq+pdf
    • http://files.beautyinyouhairsupply.com/uploads/1/3/2/7/132740536/8341190.pdf
    • http://files.thestoneconstructioncoinc.com/uploads/1/3/2/7/132741535/85d72d7f3.pdf
    • http://files.niebna.org/uploads/1/3/0/8/130813837/xisixoganiwe.pdf
    • http://files.adelaidefamefestival2020.com/uploads/1/3/1/4/131406735/947904.pdf
    • http://fobudif.individualee.com/uploads/1/3/1/1/131164250/3eaa461c4b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65529241957.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/zibaralatosidesu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2829/7381/files/tapixugidiludepa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7056/files/xuxel.pdf
    • https://cdn.shopify.com/s/files/1/0436/0414/8381/files/76705511715.pdf
    • https://cdn.shopify.com/s/files/1/0432/0431/3247/files/pathophysiology_of_respiratory_acidosis.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/xesasokebuvofabijimegen.pdf
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/juteduxabosigekejuzavuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/pajebetub.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/four_temperaments_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/xesesewuxe.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_off00017f3c.bin
a7d471db6dc52fa6f642fd641e7c3b1bb78e7e8ccaf58fa89fd027f28dd15c05
pdf-font-stream PDF embedded font (sfnt) at offset 0x17F3C 5272 bytes
font_01_sfnt_off00019125.bin
4cf95dbff2dad2b8c7d56118206b8561a1d1916d602a1774f2236c5598a1bea6
pdf-font-stream PDF embedded font (sfnt) at offset 0x19125 10404 bytes