Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc2a68036e28a7d4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-04 06:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6bf7cccd4c0bd74fe5c7f70da692cb0 SHA-1: c49a9a7eb51b2c32d79fe0444b187bba6a432e0b SHA-256: cc2a68036e28a7d4bdb55e8c381ba610ec8f7e8ea205055272651fe206252fd5
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=general+affidavit+form+pdf+free', which is also flagged as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting malicious websites.

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.cc/pify?keyword=general+affidavit+form+pdf+free
    • http://zexipuz.jencolby.com/uploads/1/3/2/6/132695384/8191049.pdf
    • http://files.richardreuser.com/uploads/1/3/2/6/132681456/c336422cb4c1.pdf
    • http://files.edgelandscapeandmaintenance.com/uploads/1/3/1/3/131382590/5b29d1b.pdf
    • http://files.smokeandmirrorspi.com/uploads/1/3/0/8/130814343/daxudifutami.pdf
    • http://files.zone3firecadets.org/uploads/1/3/1/8/131856046/6195394.pdf
    • http://files.ed
    • https://cdn.shopify.com/s/files/1/0435/4696/8215/files/69092554885.pdf
    • https://cdn.shopify.com/s/files/1/0438/2624/9885/files/mt_hood_village_weather.pdf
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/74010480289.pdf
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/analysing_data_in_research.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/the_duck_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/9229/5332/files/kibokofizofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3789128943.pdf
    • https://cdn.shopify.com/s/files/1/0428/9921/0407/files/cocubes_aptitude_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/ziselunuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/2811/9706/files/64573722570.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7668/files/sagowubirefuxepidigumuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/80459226159.pdf
    • https://cdn.shopify.com/s/files/1/0431/1161/2578/files/piwig.pdf
    • https://cdn.shopify.com/s/files/1/0437/3364/7509/files/18126023607.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_off000069ca.bin
4b3d1a0c0ef7dbee64295f25dd23be696d185c6b971093d152b8469bf6cceb28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CA 5100 bytes
font_01_sfnt_off00007b1b.bin
2aeae02759d23022a3e146acf4126d62d82b34ce1583b16f80e90d33e611186c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1B 9952 bytes

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