Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2912bfbff9b05f7…

MALICIOUS

PDF

52.5 KB Created: 2020-08-29 03:38:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40083fdfef96d32ba51020fafd89daa8 SHA-1: 6d6116aa2f49adfe33c8b2fe889ba9f4e8fd592a SHA-256: a2912bfbff9b05f76b42d6c9fcf24022d5ecf6201e52b6ddd42803280df31eae
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to lead users to further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to static.usrfiles.com, suggesting an attempt to manipulate search engine results or distribute content. The presence of urgency lures further supports a malicious intent to trick the user into clicking the link.

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.ru/wix?keyword=cube+compression+test+report
    • https://static.usrfiles.com/ugd/b8c837_5c7005fbcfba4d9e8714414bc9b18814.pdf
    • https://static.usrfiles.com/ugd/b8c837_d87cadde1a834953bef59706939dbe68.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f4337d527b0459bb485e190405982be.pdf
    • https://static.usrfiles.com/ugd/b8c837_8195b199f5f944f8bde9ad8f53cfa088.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d41640d3c184fca8f35edf71921ecee.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f843f2230d04802a9bf72260ef7aaef.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a692cca522a4a1e88e249407c9a71d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_8cfdd0b7e7d74c2eb51e171d6d389418.pdf
    • https://static.usrfiles.com/ugd/b8c837_1dab730eb5004ed79c2a686fee8e7fa3.pdf
    • https://cdn.shopify.com/s/files/1/0434/1586/3463/files/favuxogumigirakezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8447/1719/files/oer_support_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/93619373997.pdf
    • https://cdn.shopify.com/s/files/1/0431/5339/1782/files/79824766587.pdf
    • https://cdn.shopify.com/s/files/1/0448/1817/0018/files/break_u_off_tonight_song.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000701d.bin
aae4d71ae461e90fac3f5440c7fd70fa90a7bb02220f5614077617278612b073
pdf-font-stream PDF embedded font (sfnt) at offset 0x701D 4880 bytes
font_01_sfnt_off0000808d.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 1800 bytes
font_02_sfnt_off0000891b.bin
b17dd93ef3822c0181ba8c222c349de25a4668ebe2cca59c6a8cdee798632876
pdf-font-stream PDF embedded font (sfnt) at offset 0x891B 14776 bytes
font_03_sfnt_off0000b6c0.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C0 4324 bytes