Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e6beb129939ee0f…

MALICIOUS

PDF

54.8 KB Created: 2020-08-22 22:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c079c547bc17a7e81aaf638039bdf772 SHA-1: 916fe35b3e4f1cf58abea7735c205111b8680373 SHA-256: 5e6beb129939ee0f7f4ff9fcb4b57d42c9252e7b5c3f22adcfd7bed7eed4829c
154 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is likely used to distribute further malicious content or conduct phishing. The document body, though obfuscated, contains text that appears to be a lure related to a movie song, combined with authoring application details, suggesting a crafted document for malicious purposes. The ML classifier strongly flagged this PDF as malicious, reinforcing the assessment of a malicious redirector and link farm.

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.com/pify?keyword=babul+pyare+bhojpuri+movie+song
    • http://files.fustlerthefemalehustler.com/uploads/1/3/0/7/130739839/gaxiwoloxakutenuboj.pdf
    • http://files.valleyharvestmarathon.ca/uploads/1/3/1/4/131407665/d94f427ef63b22.pdf
    • http://lixadimom.mountforesthomecoming.ca/uploads/1/3/1/3/131379830/zixakoxuvumakul.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1892/7775/files/nerizimifetojirubono.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/ilustracion_botanica_helen_birch.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0406/files/integracion_biopsicosocial_del_ser_humano.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/44594932606.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/apollo_munich_health_insurance_combo_proposal_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/8502/0827/files/nadolir.pdf
    • https://cdn.shopify.com/s/files/1/0433/5416/1310/files/icao_annex_14_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0429/4275/9071/files/gupuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/7439/4014/files/regulaciones_y_restricciones_arancelarias_y_no_arancelarias.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_off00008f33.bin
c38660c4307bcd02e9ff3a2b50bd63c0d7a10506cd0ed1cf019e30dd30d50302
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F33 5660 bytes
font_01_sfnt_off0000a255.bin
1daff08d3f28efd052185d9971b77181f30dbd431ed8ed9083ad2b2aa98d356e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA255 13580 bytes