Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a89911ad29a155…

MALICIOUS

PDF

53.7 KB Created: 2020-08-19 03:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9860c21c82ec3a9bf01b7b43fc5a8f3b SHA-1: ff83e38c04bfec2ae2c3e509c327a4a006b3a3b9 SHA-256: a1a89911ad29a15573d43b28b3b5fe3777fd6074c7d5b7044a548f19d7979b87
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a movie download, which is part of a link farm designed to lead users to potentially harmful content. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a lure for external links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=ardaas+karan+full+movie+free
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.pdf
    • http://files.blueridgecru.com/uploads/1/3/2/7/132740277/eb7c46a8d.pdf
    • http://files.overlandcruisersmt.com/uploads/1/3/1/4/131408280/sibukikopaliz-nulaf-gawatonozinales.pdf
    • http://lefifeg.hummingbirdmodeltrains.com/uploads/1/3/0/8/130813117/7950083.pdf
    • http://digalefi.lmtechnologiesne.com/uploads/1/3/2/8/132814097/vubabexuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/chinese_herbal_medicine_materia_medica_bensky.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1589944702.pdf
    • https://cdn.shopify.com/s/files/1/0433/6759/6191/files/xejixekakirobanobasezego.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6766/files/digital_marketing_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0428/1345/6550/files/mumojojafoxigure.pdf
    • https://cdn.shopify.com/s/files/1/0434/8405/3669/files/dogekakofedudadidise.pdf
    • https://cdn.shopify.com/s/files/1/0432/4904/1563/files/gixojuzabupupaderojubuxeg.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/airtel_digital_tv_packages.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/70852354730.pdf
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/50953496727.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bf2.bin
c92c3178d5f828a120c89f4cdd28d366301ca82deb7c967cb9ad83fd7cb22818
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 5164 bytes
font_01_sfnt_off00006d73.bin
87985804ebf98b1030980f20b4e39595e1aa76caccafc3e7d64f2ca02509db1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D73 20968 bytes
font_02_sfnt_off00008da4.bin
5e0676e134781f2a21c06a0d045eebc95ad2f72f5ed7fc876ffdcead7ccbe471
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA4 2276 bytes
font_03_sfnt_off0000976d.bin
7b2283950ac6458fffce9449c9fdcfb7541f562f4ce5603bf1c23095e232f37c
pdf-font-stream PDF embedded font (sfnt) at offset 0x976D 3860 bytes
font_04_sfnt_off0000a6b1.bin
3f2dc8e7750d6169c5edb4ed1e87bf688afa1632ac7ebb33c6d8acb11349224f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B1 10016 bytes