Malicious PDF — malware analysis report

Static analysis result for SHA-256 544eae97b811a6ee…

MALICIOUS

PDF

42.1 KB Created: 2020-08-18 21:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c01e8ea6cd252626843a3e768ee3ed3e SHA-1: de99497714ab77fd8ddcb269cdfd7acd986e5bcb SHA-256: 544eae97b811a6ee6558fd805584779e945eae6f648c1ec0efb8a99179971e13
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=how+to+document+processes+template', suggesting a lure to a phishing or malware distribution site. The presence of multiple unknown URLs further supports the malicious intent.

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=how+to+document+processes+template
    • http://gagererug.melissasmithsart.com/uploads/1/3/1/4/131407089/007d0414.pdf
    • http://letawema.sarahsullivanwriter.com/uploads/1/3/0/8/130814788/xuxemukunulavem.pdf
    • http://gomuviw.orderriseup.com/uploads/1/3/1/4/131406082/0fca6e303bf9bb4.pdf
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/vener.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/unfair_dismissal_template_letter.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/95279132343.pdf
    • https://cdn.shopify.com/s/files/1/0439/7396/8030/files/86323214196.pdf
    • https://cdn.shopify.com/s/files/1/0433/4967/2091/files/delta_cable_tray_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/9930/8700/files/86318240169.pdf
    • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/78161329646.pdf
    • https://cdn.shopify.com/s/files/1/0438/2549/6221/files/questions_on_sound_waves.pdf
    • https://cdn.shopify.com/s/files/1/0439/2576/6312/files/zenodaputomezubogazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/97787397215.pdf
    • https://cdn.shopify.com/s/files/1/0431/2901/2381/files/marketing_concepts_and_strategies_dibb.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_off000066f4.bin
9ff4043c97cfc0f2733d08461e089a2fe125418b951e311869bd12a967df84fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 5272 bytes
font_01_sfnt_off000078cd.bin
68e62f0cfc72bab630180b27f6fef25c4dc4879dea6e5ebeadf6c230b24deed4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78CD 10148 bytes

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