Malicious PDF — malware analysis report

Static analysis result for SHA-256 405b1d8efa803ff6…

MALICIOUS

PDF

42.6 KB Created: 2020-09-01 16:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 939a929ec653117b8bd20667a7e6afb0 SHA-1: e2da931f66f5dd889f4c80b0fa2d6b387f9631ae SHA-256: 405b1d8efa803ff672b88fe517660b98d1a3bc4890017a13162505ee0e8be27c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'Adobe interactive pdf template'. The presence of numerous embedded links, many pointing to Shopify domains, suggests a link farm or redirection strategy to obscure the ultimate destination. The primary malicious IOC is the redirector URL.

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.com/wix?keyword=adobe+interactive+pdf+template
    • https://static.usrfiles.com/ugd/b8c837_ff64073e6f094029b9ea28720b173fae.pdf
    • https://static.usrfiles.com/ugd/b8c837_a23d302d84f44745abc39ae295659b60.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ccba908413f4b75b4dbe3ec35274bd2.pdf
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/bakan.pdf
    • https://cdn.shopify.com/s/files/1/0452/4412/1248/files/liripetabexujarolozilada.pdf
    • https://cdn.shopify.com/s/files/1/0435/6151/7217/files/badminton_league_mod_apk_3._58.pdf
    • https://cdn.shopify.com/s/files/1/0431/7682/0890/files/96827121142.pdf
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/tawuxoriwak.pdf
    • https://cdn.shopify.com/s/files/1/0429/1782/2620/files/benefits_of_online_shopping.pdf
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/tezagixolekavo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/ajay_atul_marathi_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/bubebekawememu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/magnus_chase_the_sword_of_summer_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/fagigelezeb.pdf
    • https://cdn.shopify.com/s/files/1/0463/2500/6497/files/arizona_form_a4_how_much_to_withhold.pdf
    • https://cdn.shopify.com/s/files/1/0439/3874/2430/files/75088957930.pdf
    • https://cdn.shopify.com/s/files/1/0437/4449/3720/files/muwut.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_off00006a63.bin
ac4c8af93413a06fa53717803daefe4322bac2785a29c0e2e7b3b99b2005aec9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A63 5312 bytes
font_01_sfnt_off00007c63.bin
1f98db1dbf08c83db2a3a96198311091115a94c1750675cd54ee341d0dac668e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C63 9740 bytes