Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb122fd98f03f5fe…

MALICIOUS

PDF

63.8 KB Created: 2020-08-20 18:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f1fd93b2d0d04200a44c83ef3064e4c SHA-1: 75a10a47179ec5e9ef454462ab9de3520b7f13b1 SHA-256: fb122fd98f03f5fe22128e3c595bdee6b165e7213a59300759a1ddc03422a717
168 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a data sheet. The document also includes a mass external PDF link farm, with many links pointing to Shopify, likely to obscure the malicious redirector. The presence of a 'Password-protected archive handoff' heuristic suggests the user might be prompted to download a password-protected file, which is a common tactic to bypass security gateways.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=boise+cascade+plywood+data+sheet
    • http://vosefoxel.ahglawoffice.com/uploads/1/3/1/0/131070306/7fbe226.pdf
    • http://files.spartanstoneworks.com/uploads/1/3/1/8/131856518/8050331.pdf
    • http://zewipej.marlox.net/uploads/1/3/1/4/131453267/wetuzawesek-dexemujupaxov-ketod-duzeniwigotama.pdf
    • http://files.makeupbynavpreet.com/uploads/1/3/1/3/131379211/segazip.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6648/files/application_letter_for_ojt_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/sibupelifogifazugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/1291713684.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/alabaster_jar_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/2782/2749/files/pdf_to_word_apple_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/redukenedobitaguwowok.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/hornady_9th_edition_reloading_manual.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b167.bin
caca5d0fab1eb7f364e411ce61b25aadca5a7c6a51c9ba3370478f5665fe927c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB167 5308 bytes
font_01_sfnt_off0000c382.bin
765194ab40d4e56fbe02651edb13025607379a18298c502f6b03822c1113dbbf
pdf-font-stream PDF embedded font (sfnt) at offset 0xC382 15132 bytes