Malicious PDF — malware analysis report

Static analysis result for SHA-256 94dfbb269fdb5e73…

MALICIOUS

PDF

44.6 KB Created: 2020-08-23 12:11:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bafab00b5b7fdb0482386c9d518bc45 SHA-1: c8d4ccb1843e96a6499ec90d238a2a3510ff973f SHA-256: 94dfbb269fdb5e733bf9f3a4f192a78c3a5a80ae6c4df19c41bb176470817d75
152 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=you+will+be+missed+card+template', suggesting a lure to a malicious site. The presence of multiple PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=you+will+be+missed+card+template
    • http://demul.forgecraftsteelfabricators.co.uk/uploads/1/3/1/4/131483152/natutipa.pdf
    • http://vumid.lshstheatreparents.com/uploads/1/3/1/0/131070197/35296.pdf
    • http://famiwowuj.hermanusactivities.net/uploads/1/3/1/3/131382406/00bf19d6562f4d.pdf
    • http://files.higgsfuneralhomeandflorist.com/uploads/1/3/1/8/131857916/3bb83067b2254.pdf
    • https://cdn.shopify.com/s/files/1/0452/2960/5024/files/vefofogelisevazoralewokow.pdf
    • https://cdn.shopify.com/s/files/1/0463/0278/9789/files/75006522460.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8129/files/op_amp_circuit_design.pdf
    • https://cdn.shopify.com/s/files/1/0435/4618/1787/files/16292042291.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2325/files/lavovesanedarekuwel.pdf
    • https://cdn.shopify.com/s/files/1/0433/4898/3959/files/ashrae_handbook_of_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2208/files/jixorudofin.pdf
    • https://cdn.shopify.com/s/files/1/0428/5018/9478/files/sobijug.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/80346841853.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000626a.bin
e10bb1c29e962462513db2db8291fdf9ab20922533c76d085ad847bfb8596b76
pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 5188 bytes
font_01_sfnt_off00007418.bin
987421e208b6159b8a14b3b946459680b000becfca6edfa1b1aeea0dc44b0b3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 10244 bytes
font_02_sfnt_off00009726.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x9726 4324 bytes