Malicious PDF — malware analysis report

Static analysis result for SHA-256 d06fe0d2e17c3fe4…

MALICIOUS

PDF

34.7 KB Created: 2020-08-23 22:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2508684302b7b47ad43cb97b168eaff3 SHA-1: 71b9742b319e7c5d64ce79775619018abd566e84 SHA-256: d06fe0d2e17c3fe4cae5a8d9576fc66731198e197803f3008f51f77d123a90b9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, including a redirector link to 'ttraff.cc', suggesting a phishing or SEO manipulation attempt. The ML classifier strongly flagged this PDF as malicious. The document body is heavily obfuscated but contains the redirector URL, indicating it's likely used to lure users to malicious sites or to generate traffic for SEO purposes.

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.cc/pify?keyword=beach+chair+image+free
    • http://files.gray-blog.com/uploads/1/3/0/9/130969185/lumivixog.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0021/files/gixagakaveneguzunazipakuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/wamizizobikoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/space_invaders_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/murez.pdf
    • https://cdn.shopify.com/s/files/1/0438/8257/8088/files/classroom_management_strategies_questionnaire_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/lolikulofuvipozilet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3217/5014/files/janesewuledafadosew.pdf
    • https://cdn.shopify.com/s/files/1/0431/3989/1357/files/biografia_de_pierre_bourdieu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5316/1367/files/sipelolazujokinibobi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6951/2607/files/24940623323.pdf
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/dire_straits_brothers_in_arms_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/18835115311.pdf
    • https://cdn.shopify.com/s/files/1/0458/1346/5254/files/wekuroxa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/que_son_los_acuerdos_comerciales_internacionales.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_off00004b7d.bin
850ff5625ece035af2189b5987ae9242f7c68b6d0d2253cf3bc4a9c5dc566bee
pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7D 5132 bytes
font_01_sfnt_off00005ccf.bin
3b58d69bf579eba8c54c2852f64ce7a46d652bb0b5aeb341eecb52c040de9922
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CCF 9712 bytes