Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d0cb8aa4e1d8463…

MALICIOUS

PDF

54.8 KB Created: 2020-08-09 19:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4371ab5a42d8245e609415b2f4a1276a SHA-1: b3c29935f99018ce30db83f5f2594229e0627f78 SHA-256: 7d0cb8aa4e1d84636e9e7db9293ad587b21da751d9d98de928cc4d970bb5c75a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. This indicates the document is designed to lead users to malicious sites. Additionally, a PDF SEO link farm heuristic was triggered, suggesting a large number of outbound links, many of which are hosted on Shopify but point to potentially malicious content. The document body contains the malicious URL and appears to be a lure for an 'answer key'. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=parishkar+ldc+answer+key+pdf
    • http://fidoge.peakdistributingia.com/uploads/1/3/0/7/130776208/tululofes_pavafeja_tobifavozum_juxejidam.pdf
    • http://files.manchestersessionalgps.com/uploads/1/3/1/4/131482881/229813f17fdaac5.pdf
    • http://files.kirbyonpolitics.com/uploads/1/3/2/8/132815002/4504d1.pdf
    • https://cdn.shopify.com/s/files/1/0434/5331/7272/files/curriculum_development_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3042/files/multiplication_tables_1_12_printable_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/1575/6182/files/99449522568.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/16239129205.pdf
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/vonebekivotoliwidafemazek.pdf
    • https://cdn.shopify.com/s/files/1/0433/5920/7579/files/19346658849.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/79238684615.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/binding_of_isaac_match_stick.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/revumoxeso.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xogasetixudaxaw.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
stream_006_off0000a91c.bin
b1b4e38b9e3e94623ce790cf7cf3456ff6af0eeef595b683475faf6d4f068401
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA91C 11880 bytes
font_00_sfnt_off000061ae.bin
1820abcd5e1938e0690e5571fdc1eadda184783afe79fd9ee9de45ae39b7d0b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x61AE 5504 bytes
font_01_sfnt_off00007475.bin
b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7475 3720 bytes
font_02_sfnt_off00007fd8.bin
6e2b61643caa485ff724909f2a1409315cc5d668ec48ac7125eed246875782fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD8 13328 bytes