Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d2f9305c90921d…

MALICIOUS

PDF

52.8 KB Created: 2020-08-29 12:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ab7ae638337c2cee907ca3d3ad85305 SHA-1: 58e1f44c670005eb9382a1b2e3015bbe6fbf546d SHA-256: 82d2f9305c90921d04c579611a74c8e88cd01fc29e246d14ab577c5cb2e28ef2
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to mimic search engine results, with the primary link directing to a known malicious redirector. The document body, though partially corrupted, contains the query 'Is meat tenderizer bad for dogs' and the malicious URL, suggesting a social engineering tactic to entice clicks. The presence of numerous external PDF links further indicates a link farm strategy.

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=is+meat+tenderizer+bad+for+dogs
    • https://static.usrfiles.com/ugd/b8c837_b0e53a41712345eca713275e1cb4fd1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6d535e08de14c388e95b2ff94021b16.pdf
    • https://static.usrfiles.com/ugd/b8c837_3209c11817454c42a95375fe3333f0bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ee590db22b0406ab72ad62683a0418b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a17dbd8aaba487cac767d37f82ef185.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c8b9c234fc9424180aa2cc9a37cbb81.pdf
    • https://static.usrfiles.com/ugd/b8c837_42f181e00a294d89978bc9d24152c657.pdf
    • https://static.usrfiles.com/ugd/b8c837_a6c34eea607d423bbeb400693806f6c4.pdf
    • https://cdn.shopify.com/s/files/1/0437/8417/5773/files/michelle_beatles_piano_chords.pdf
    • https://cdn.shopify.com/s/files/1/0434/1130/8696/files/telirarerepuvivonufujap.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/quantum_mechanics_problems_and_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0428/1230/9671/files/xuvupegixelis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7805/files/brand_fusion_remix_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0457/6863/8620/files/85821619376.pdf
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/htn_guidelines_acc_aha.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/pufumaxoxu.pdf
    • https://cdn.shopify.com/s/files/1/0457/8505/5398/files/verinotogu.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_off00007aa5.bin
cf8074e5e9ff514d6e41cdf4b091f8da98a6c05e7c078612c64116f5fad2bb35
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA5 5320 bytes
font_01_sfnt_off00008ca5.bin
8d5c1e06bead35becc9b2e233c353886f1925bed19331a083a220454445c4586
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA5 10428 bytes
font_02_sfnt_off0000b03b.bin
39760ae7b0fda0e3ffe2537123358e8d6b9fe24b9f55bfd744cd14ad53c20a99
pdf-font-stream PDF embedded font (sfnt) at offset 0xB03B 16272 bytes