Malicious PDF — malware analysis report

Static analysis result for SHA-256 372e7198b4ff477d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-11 04:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba17e4e42cf79bc247e1934bb2b75b52 SHA-1: 23744941fce6de0337b33e6aeed11b602b03900d SHA-256: 372e7198b4ff477d1e1184edaf363fa013b518f43f2ac539e1d095e5e31a7d6e
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to `https://ttraff.ru/pify?keyword=celebration+day+tab+pdf`, which is flagged as a malicious redirector. The document body also contains this URL, suggesting a social engineering lure to trick users into visiting a malicious site. The PDF also hosts a large number of other PDF files on Shopify domains, likely for SEO manipulation to improve the ranking of the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=celebration+day+tab+pdf
    • http://gakikif.edenplacefarms.org/uploads/1/3/1/4/131406687/firij-zubuke-xunok.pdf
    • http://files.whenyousuckatrunning.com/uploads/1/3/1/8/131856212/6343380.pdf
    • http://files.allyparks.com/uploads/1/3/2/6/132695697/1424463.pdf
    • http://files.allyparks.com/uplo
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/boise_state_logo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7409/3217/files/32801138277.pdf
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/labemaliwipuvu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/49660322598.pdf
    • https://cdn.shopify.com/s/files/1/0430/6554/0759/files/gosazawifeko.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/68995434049.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/47039211319.pdf
    • https://cdn.shopify.com/s/files/1/0430/9060/8285/files/8048227740.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/gipexuxodijutena.pdf
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/the_adventures_of_tom_sawyer_book_review.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_off0000717d.bin
7fc5b248d0f97631cdb61525440766ff93f00a5b4e2ea390157b8aa7e628e7a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x717D 5004 bytes
font_01_sfnt_off00008284.bin
e5827ef63bd7d4ce04ff88d8532ff4f1d06ce5c0880006bba3fa8bfbc1169ade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8284 10636 bytes

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