Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66aca3d0a04e424…

MALICIOUS

PDF

42.7 KB Created: 2020-08-29 03:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 405494595fd9e7f5d7e236a39b565f00 SHA-1: ffd09bd565a4002500bee67ca9e03e6fe1ad1bc1 SHA-256: a66aca3d0a04e4241fa3650dc1c3a2cd7590de37a33455f80738f493f23cc41e
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=parole+packet+samples'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external links, one of which is a Shopify URL. The document body, though heavily obfuscated, contains fragments of the redirector URL and other PDF links, suggesting a lure to external content. The presence of urgency language further supports a phishing or social engineering attack pattern.

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=parole+packet+samples
    • https://cdn.shopify.com/s/files/1/0432/0673/8079/files/2008_ap_calculus_ab_free_response.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8090/files/ladewozodiduwubelizazufeb.pdf
    • https://cdn.shopify.com/s/files/1/0448/0519/3885/files/introduction_to_photolithography.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca74d9dd5a584ad8b942c1ef8aaa3821.pdf
    • https://static.usrfiles.com/ugd/b8c837_9109b88c05074a64ba9531a98d372619.pdf
    • https://static.usrfiles.com/ugd/b8c837_660e91e05a264cf58167280eab440006.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a3ecd10e2ae41c4a38f2cb00ddd1fec.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbf294685cf645a9b97a4256325a8763.pdf
    • https://static.usrfiles.com/ugd/b8c837_2150e9f0dea54ed888cc0ed45ba302a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce34b69915f945f9996a0bdff8cedec7.pdf
    • https://static.usrfiles.com/ugd/b8c837_af2cee9a670f4813b69f73cfc40e8136.pdf
    • https://static.usrfiles.com/ugd/b8c837_06a290a14c7b4918819c938994945933.pdf
    • https://static.usrfiles.com/ugd/b8c837_abebc3777b5b4a4f8867a1f155e4821f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3fd023897294987986df00c7fe39778.pdf
    • https://static.usrfiles.com/ugd/b8c837_6df89ec7e95e4facbbf0a612c0d38c02.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b3463456e4549edbdb81a62087af4a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_cdeea24ea27f4720a59cad1fc6193a53.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_off000068a0.bin
c2ef5a47b0d8669f597e0a130cc36f4eb97ab78afd7d14618e7d46791e89f73f
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A0 5144 bytes
font_01_sfnt_off00007a0a.bin
2acd7eb32c62d57c672c72d88a8e667783effd4d1e8ad9c5f46cf2180da21769
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0A 10700 bytes