Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc04b3847244c7f7…

MALICIOUS

PDF

49.2 KB Created: 2020-08-03 00:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7de96a65e8b77e731c27a543cf663116 SHA-1: 7eb7ab2e5575c1524651ddcdf9d1f9806a609846 SHA-256: bc04b3847244c7f7c78d134551fa97d58aedf781ab0ba3ab387bda7ad23d48df
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which points to 'https://ttraff.cc/pify?keyword=1999+mercedes+c+280'. This URL is likely used to redirect the user to a malicious site. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The presence of a car-related keyword in the malicious URL indicates a potential lure to entice users to click.

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=1999+mercedes+c+280
    • http://files.littlepatchofweeds.com/uploads/1/3/1/4/131454126/3873b63e74611.pdf
    • http://files.interfaithutica.org/uploads/1/3/0/9/130969218/9093583.pdf
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdf
    • http://bixov.thewholisticrevolution.com/uploads/1/3/1/8/131857419/b74156e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/66507184787.pdf
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/jiguretopiwelevik.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/21121064408.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/free_ford_explorer_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/nilobivonokonofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/figurazezuxalamajipob.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/1842772528.pdf
    • https://cdn.shopify.com/s/files/1/0434/1117/7626/files/fomezel.pdf
    • https://cdn.shopify.com/s/files/1/0434/4843/4840/files/installing_crouton_on_chromebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2708/files/logibivufogawalozap.pdf
    • https://cdn.shopify.com/s/files/1/0437/8918/9272/files/57497476339.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/tusuwuzazemo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1399/5672/files/git_reset_hard.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7265/files/pexafasejogafi.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_off000080b4.bin
738416367c96aad2f68b3a8e5e1c6712200155f29c6ead32448b3741790960a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x80B4 5424 bytes
font_01_sfnt_off0000930f.bin
6f983dd07064c4fdbd3985421fbcd722d6bd6bd86f0fcacfd970bf3cc494f461
pdf-font-stream PDF embedded font (sfnt) at offset 0x930F 10664 bytes