Malicious PDF — malware analysis report

Static analysis result for SHA-256 38caaf25532df5b4…

MALICIOUS

PDF

50.4 KB Created: 2020-08-31 08:45:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51d67ed960224ca189d3f01924f0ddd7 SHA-1: 873beebf42fca4eb658fd773d8715c23b78ea2e2 SHA-256: 38caaf25532df5b431757d020f469aee1157084b1b5f931b4a26a63d9d52cf20
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=mobile+cellular+telecommunications+by+w.c.y.lee+pdf+free+download'. This URL is likely part of a phishing or scam campaign designed to trick users into downloading further malware or visiting malicious sites. The document body, though heavily corrupted, contains text related to the lure, reinforcing the malicious intent.

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/wix?keyword=mobile+cellular+telecommunications+by+w.c.y.lee+pdf+free+download
    • https://static.usrfiles.com/ugd/912de2_31de077272dc42c0a4d1855ccae4be01.pdf
    • https://static.usrfiles.com/ugd/3f80ec_8741f2692a2f41d8a2fe75ac4ee2b1bb.pdf
    • https://static.usrfiles.com/ugd/1813b3_bb54cb2c08c2427dbcf1970408bb3e82.pdf
    • https://static.usrfiles.com/ugd/6c98bc_5bbea9d33e624081bfb0b18fc2ac63ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_19eb905ce2e84e5c9984de8a8255a2fc.pdf
    • https://static.usrfiles.com/ugd/5b5da7_b79b7ed258584dac962cbf653c8b927c.pdf
    • https://static.usrfiles.com/ugd/b8c837_98a7132ed7234b72bab264bd7715e189.pdf
    • https://static.usrfiles.com/ugd/37428b_719fd986357d4f6cb5be6cb1f15cce7c.pdf
    • https://static.usrfiles.com/ugd/e73fea_f00c030f86b14edfbc2d455bc70b76c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f5505025d5b4854ab95cd8b73e34d04.pdf
    • https://cdn.shopify.com/s/files/1/0428/7712/4764/files/suzeku.pdf
    • https://cdn.shopify.com/s/files/1/0431/4847/6572/files/p5_best_weapons.pdf
    • https://cdn.shopify.com/s/files/1/0435/1016/9759/files/11480428994.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/44390177218.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/15712860798.pdf
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/xedenebeduxasajofeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/promenades_2nd_edition_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9e.bin
342887ff0e78890e697e2acdec08d8ffb4aeb5f371d806c7e1abf9877c1c2af0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9E 5672 bytes
font_01_sfnt_off00007fdf.bin
2d35fe1b112251630f6c3e185fb4bf58c6327cea99f60afab3ca0473214b5b30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDF 2116 bytes
font_02_sfnt_off000089ab.bin
6917dd87ffd154ad21c99b8028af8534cbe0548557a0d334cd43a2898d1515e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x89AB 15268 bytes