Malicious PDF — malware analysis report

Static analysis result for SHA-256 2366128614028dd6…

MALICIOUS

PDF

43.4 KB Created: 2020-08-06 17:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8e30585b55725f1685c17deb9f9f13c SHA-1: b83aca54c2a727970054b1d0451e16ae8a6fc85d SHA-256: 2366128614028dd6349992d9e470d5bd8cb7bb412ab5de71d2935c65d12f30fd
158 Risk Score

Malware Insights

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

This PDF document contains embedded JavaScript and a critical malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=saree+blouse+cutting+and+stitching+books+pdf'. The document body, though partially corrupted, also contains this URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The ML classifier also strongly flagged this sample as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=saree+blouse+cutting+and+stitching+books+pdf
    • http://files.father-son-holy-spirit.com/uploads/1/3/1/6/131606901/af9ae0de619cc7.pdf
    • http://files.rosiefowler.com/uploads/1/3/1/6/131607029/6f9563bf18c6.pdf
    • http://files.honor-cafe.com/uploads/1/3/2/6/132695278/8789694.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/8131997781.pdf
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/buvikamu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/calculus_early_transcendentals_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9429/5203/files/2018_subaru_outback_owner_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9560/files/72003684551.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/79423394791.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/office_365_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/12534593716.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/dakowugakovodata.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/navy_nonresident_training_course.pdf
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/kezagusas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/zugokor.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_off00006987.bin
1febeab8ee6f6e59fd6b79d31c90b06a8109937d33c676643dee7ebf9ca8965d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6987 5724 bytes
font_01_sfnt_off00007cf2.bin
159d26f7698c6ec5036a3e05849b42268957ce59bdad358ff3ac271d7eddda25
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF2 10468 bytes