Malicious PDF — malware analysis report

Static analysis result for SHA-256 5389b60ec377c7df…

MALICIOUS

PDF

53.1 KB Created: 2020-08-06 12:38:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 662496c1552733017b97ae60b23b7798 SHA-1: 14e64e35c92fe30d474b898ac44c67cdfb0aacca SHA-256: 5389b60ec377c7df435b61429eb5ebe32e4c4dfe77bde934694ca56f0e72357e
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to traff.com, suggesting a phishing or malware distribution attempt. The document body, though heavily corrupted, contains fragments of URLs and text that hint at urgency, aligning with the 'SE_URGENCY_LURE' heuristic. The presence of numerous shopify.com links, while many are confirmed benign, is part of a larger link farm strategy. The primary malicious IOC is the redirector URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=eras+protocol+surgery+pdf
    • http://zunam.mindymajors.com/uploads/1/3/0/7/130739704/7867629.pdf
    • http://files.apologeticsdiscipleship.com/uploads/1/3/1/4/131437107/lajagizinurab.pdf
    • http://files.becomingsarh.com/uploads/1/3/0/7/130739567/3400932.pdf
    • http://files.kathleenritzart.com/uploads/1/3/1/3/131379971/1e261f.pdf
    • https://cdn.shopify.com/s/files/1/0438/4574/6838/files/mipujewujazewop.pdf
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/41353178476.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/78787814754.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/23933400087.pdf
    • https://cdn.shopify.com/s/files/1/0436/5841/2185/files/xijobanigak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/22444901135.pdf
    • https://cdn.shopify.com/s/files/1/0438/2654/4802/files/tepufufezuwojiwitagiva.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/3654031286.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/17761978468.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/xadotun.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/rafodufopijuxusuvekazej.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_off00008dfb.bin
3abeda017c01ec828fbdeb1869fcfb86ea64a20c9ba1a7664ea7cb1cc61a71c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 5384 bytes
font_01_sfnt_off0000a064.bin
e4806c1f121ad9c87f968e5512c39978b6face8bbeb6234055db8cf956af5af2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA064 12200 bytes

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