Malicious PDF — malware analysis report

Static analysis result for SHA-256 945ef669b5637107…

MALICIOUS

PDF

36.2 KB Created: 2020-08-16 00:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8c4b86e4c4a755d01e301d9b76b9baa SHA-1: 2fd2141e382541b92355d38eff0b571df7af179e SHA-256: 945ef669b5637107956c0acfe5ab6d9b4d5f2e3fe8629b2b9cf4d5cf70572f04
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=deep+sided+brushed+cotton+fitted+sheets'. This indicates the document's primary purpose is to redirect the user to a malicious site, likely for phishing or malware distribution. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many of which are hosted on Shopify. The presence of urgency language further supports a malicious intent, aiming to prompt immediate user action.

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.cc/pify?keyword=deep+sided+brushed+cotton+fitted+sheets
    • http://files.handsonsciencefun.com/uploads/1/3/0/7/130775977/vefamijisuvewok-rumepikogi.pdf
    • http://luzuj.manawatugymsports.com/uploads/1/3/0/7/130775364/f0789abd8cbae5.pdf
    • http://files.whiteeagleworcester.com/uploads/1/3/0/9/130969166/9693938.pdf
    • http://files.jaystull.com/uploads/1/3/0/8/130874161/5f2da9aae.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/63463960353.pdf
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/mla_citation_online.pdf
    • https://cdn.shopify.com/s/files/1/0435/2363/7399/files/nowuxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/22956827199.pdf
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/zipowixub.pdf
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/perfect_money_adder_2017.pdf
    • https://cdn.shopify.com/s/files/1/0431/5820/8674/files/37448491430.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_off00004faf.bin
015f12196cd0db9f950c6ec789093cabd601b0cbae8e0756afd519d8bd0dd1fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FAF 5140 bytes
font_01_sfnt_off00006123.bin
2a419b12576051397e8e16567b7cb11daddbab634161db7b33f092a3e875aa55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6123 10296 bytes

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