Malicious PDF — malware analysis report

Static analysis result for SHA-256 322c586ff962851a…

MALICIOUS

PDF

48.4 KB Created: 2020-08-03 23:23:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c21759384302bc1e2b1d9e4f98434ecb SHA-1: daffa94e27c1857f8581ca56775cae241385b17a SHA-256: 322c586ff962851a3bb2d458318d50869804cb61c8a8044970017422b4b9cf13
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document may be a decoy, instructing the user to open a password-protected archive, a common tactic to bypass gateway security. The embedded URLs and the nature of the heuristics strongly indicate a phishing or malware distribution attempt.

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.
  • 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
  • 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/pify?keyword=c%25E1%25BA%25AFt+file+pdf+b%25E1%25BA%25B1ng+nitro
    • http://files.gumbeerfest.co.uk/uploads/1/3/1/6/131606965/gusafozenidu.pdf
    • http://files.huntsbrangus.com/uploads/1/3/0/8/130813111/667c4f55437.pdf
    • http://files.ajdevitt.com/uploads/1/3/2/8/132814906/8205163.pdf
    • http://files.wss1sgradeib.com/uploads/1/3/0/7/130740323/pabetajegefofa-natoxoweju-mavalivebipanuk-majufajovezaj.pdf
    • http://files.dj-b-fore.com/uploads/1/3/2/6/132695418/bc818c0.pdf
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/47697307166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/70051468714.pdf
    • https://cdn.shopify.com/s/files/1/0432/1656/8482/files/50cc_scooter_simplified_vacuum_hose.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dusegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3429/files/figalelomorola.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/lolikulofuvipozilet.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/55470434448.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/20862381547.pdf
    • https://cdn.shopify.com/s/files/1/0432/5031/9528/files/86879125647.pdf
    • https://cdn.shopify.com/s/files/1/0432/4150/4927/files/dobisofelul.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/xixodelesibo.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_off00007ca4.bin
893ee6c8928754e9aada49c4baf659973eb46b836acaeb7de51f79a8f3cc6c62
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA4 5444 bytes
font_01_sfnt_off00008e60.bin
37c7e092bffccb7306b0e02eea12a8bcfb1120f62ea8afaf6ce0ed7213ef60e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E60 11564 bytes