Malicious PDF — malware analysis report

Static analysis result for SHA-256 93b6c3c18905d884…

MALICIOUS

PDF

42.6 KB Created: 2020-08-07 20:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e23438e5ad19d355a4695e196bbc2a7 SHA-1: 355c01f77698a59559632aed10ce06edfa2d9da1 SHA-256: 93b6c3c18905d8846a1516650cd2887f952ef32167aaf54fee04278cb8922d09
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.cc. This indicates the document is designed to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure of a file conversion tool. The presence of numerous external links, as flagged by PDF_SEO_LINK_FARM, suggests a tactic to distribute malicious content widely.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=apache+poi+pdf+to+ppt
    • http://files.nutritionrites.com/uploads/1/3/1/4/131438538/xuxozur-renim-rifolova.pdf
    • http://files.mrragersblog.com/uploads/1/3/0/7/130739810/wotasa-ranatusesafefi.pdf
    • http://files.communitychurchsheppey.com/uploads/1/3/0/8/130874318/49948dc.pdf
    • http://files.mrgraney.com/uploads/1/3/2/6/132681144/cdb69af5f09f4b.pdf
    • http://files.stevenwojtowicz.com/uploads/1/3/0/8/130873826/kopojupuwi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/669297692.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/bifulusesowodezaxujoturi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/vasitebetufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/11645668526.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/65914550517.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/vetugileterupitofuxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/3080/4637/files/dikaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1996/files/83541896780.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/glock_buyers_guide_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8344/7968/files/xawefokalomodudujazaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/79189603032.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/14717241073.pdf
    • https://cdn.shopify.com/s/files/1/0437/1031/6694/files/31544595014.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_off00006a56.bin
203bbcc9f3f79d100fca29970ab9fe2ca75747408fbfe47f1315d89799117181
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A56 4928 bytes
font_01_sfnt_off00007b21.bin
9cab2897926d4aa5d86257a1a6b8be495fc9e4b7aa568394c9940122f4612756
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B21 10080 bytes