Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b4e32dcbada4713…

MALICIOUS

PDF

78.3 KB Created: 2020-08-29 09:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fae0b1030eaae71f9d1d807c9b7d4b0a SHA-1: 5ec6591d7e9f2ffb93a58cfcd5dae9ee0488bdd0 SHA-256: 2b4e32dcbada4713c2bfabf2fa66e6704e67f0aeb223dc66333a5b859088eb24
180 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating it's a malicious redirector, linking to a URL that promises 'ase study guides heavy truck'. This URL is part of a link farm, with many embedded links pointing to Shopify. The primary malicious URL is ttraff.link, which is known for redirecting to malicious content. The document body, though heavily obfuscated, contains the malicious URL.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.link/wix?keyword=ase+study+guides+heavy+truck
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/59163917451.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/atelier_rorona_dx_trophy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3130/files/kodininonosakilugow.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/rujipazifewav.pdf
    • https://static.usrfiles.com/ugd/b8c837_a207f8817be44831a1eba6f3479d8ed8.pdf
    • https://static.usrfiles.com/ugd/b8c837_8fb9c67ba5c34197bdd12f7c1116f610.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae99941970e0485da10f56d4a04bda7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_22e15d914cc34657a0397e54a8e1e26e.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/dukaxal.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/96319177280.pdf
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/53923006408.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/cambay_basin.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/msi_n1996_motherboard_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/bosch_nexxt_500_series_washer.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/somunabufawul.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peboginesewuxexadamo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/letter_template_word_doc.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_off0000f41f.bin
a8017727cf212bf55f48858e83c2904e32cb04819805a21af5c9bb14c04c78ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xF41F 5384 bytes
font_01_sfnt_off0001066e.bin
ee0e83640486cea4a6dcab48b77c88fb4bfcd4d9fcb823d7c22f2a9228c6790f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1066E 10940 bytes