Malicious PDF — malware analysis report

Static analysis result for SHA-256 21986700807d3fc4…

MALICIOUS

PDF

47.9 KB Created: 2020-08-15 07:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a039109f3746da630eae85edbc95496 SHA-1: 476746d60954ea2c329c5969489c4dc43f3bcd03 SHA-256: 21986700807d3fc4eecaf68afc2f911f9f9ad4cc5ff2b6f7654f71e300a0121b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a user manual. This redirector likely leads to further malicious content or exploits. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed for SEO manipulation to attract victims.

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/wb?keyword=2017%20toyota%20highlander%20hybrid%20user%20manual
    • http://files.rhodesfst.com/uploads/1/3/2/6/132695881/lilatepejeboxel_kujirorujaxur_lupilufulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5943/0054/files/atalasoft_reader.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/52906043410.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/gevuwomobovuzatinijetok.pdf
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/neletenupapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6628/6490/files/destination_b2_student_book_with_key.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3784/files/tinafusoxisujerusikow.pdf
    • https://cdn.shopify.com/s/files/1/0437/2607/8101/files/41814698174.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073be.bin
f425776c44fcc85cc1d95e702aa2f76772ecac205dc24516c62392257c7162b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 5792 bytes
font_01_sfnt_off00008736.bin
c6e690129464b9f30485ae6587790a9dc58aece877add48a9f85e0eaf6f6e715		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8736 13748 bytes

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