Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c2fd017a0c9312a…

MALICIOUS

PDF

55.2 KB Created: 2020-08-14 22:57:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4b0212a97d7a0b1f3ecc4aee4ecb4ea SHA-1: 228f3ee6458b63040bddeda223dc7951c46e11f0 SHA-256: 1c2fd017a0c9312a034eb1593a2a8a9015e8db942c58fa5fbc4aa489f9b1c37c
128 Risk Score

Malware Insights

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

The PDF was identified as a malicious redirector link farm, containing numerous external links. One of these links, 'https://ttraff.cc/pify?keyword=trauma+abdominal+cerrado+pdf+2017', points to known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary component of the lure. The presence of a large number of PDF links, many hosted on cdn.shopify.com, indicates a potential SEO poisoning or link farm strategy.

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=trauma+abdominal+cerrado+pdf+2017
    • http://files.glenheart.co.uk/uploads/1/3/1/4/131437246/be9e4ed54fa65f.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1065/files/formation_of_the_new_testament_canon.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/zibivovikuze.pdf
    • https://cdn.shopify.com/s/files/1/0450/0422/6724/files/astrology_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/puxapoxowar.pdf
    • https://cdn.shopify.com/s/files/1/0433/8063/7859/files/jebaso.pdf
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/rukujizelekujivaxuxe.pdf
    • https://cdn.shopify.com/s/files/1/0439/5696/1438/files/52532093565.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_off000098db.bin
ffe44159e4dd7636a8b1bb50f1b6027b58266c45fa05a477c51da1e0c7f37cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98DB 5616 bytes
font_01_sfnt_off0000abe6.bin
130df890295eef22f897b72f1f344823f79b0c965d3d42df3590f4de2a463537		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABE6 10696 bytes

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