Malicious PDF — malware analysis report

Static analysis result for SHA-256 f306ae07452b69ae…

MALICIOUS

PDF

69.9 KB Created: 2020-07-30 21:45:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb293e99cacd200a66f29ccc5c55bc0c SHA-1: 509a78fe08704482d275752a6eccb1626f371671 SHA-256: f306ae07452b69aec57512d41f06db079d39d7a2b9ae5a38547c4d7f3f030264
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is a known malicious infrastructure. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to learning or books, aligning with common phishing tactics. The ML classifier strongly indicates maliciousness.

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=arap%25C3%25A7a+%25C3%25B6%25C4%259Frenmek+kitap+pdf
    • http://files.jordanpearsonalive.com/uploads/1/3/1/8/131856161/5b3932e055804b3.pdf
    • http://files.uptildawnpaperworks.com/uploads/1/3/0/9/130969018/patotelinoka.pdf
    • http://files.sulivalesente.com/uploads/1/3/2/7/132740424/c8392132747fb.pdf
    • http://files.tonypalermolifecoach.com/uploads/1/3/1/4/131437740/eaf0f757.pdf
    • http://files.uwbcmn.org/uploads/1/3/1/3/131378852/xuzatelaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3967/8886/files/81094362132.pdf
    • https://cdn.shopify.com/s/files/1/0434/0855/6182/files/63226410259.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/48937123041.pdf
    • https://cdn.shopify.com/s/files/1/0428/1368/5927/files/soxuxapopofigij.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/virosifojet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/12013401455.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/11629714935.pdf
    • https://cdn.shopify.com/s/files/1/0428/8276/0860/files/walejekufo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/tisamubasajamow.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/kuxisedufadu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/votovelozavewedak.pdf
    • https://cdn.shopify.com/s/files/1/0428/8747/9455/files/dojubawutonekodugev.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000e798.bin
7204141076db0cbac6d049b19222773c1e71e836c6bf6c9fe704e04e4ea48cc4
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE798 19424 bytes
font_00_sfnt_off0000add5.bin
bed04ccdc5f0534d22e4892f5b19858e1456bfe3d54faf435d550a9d29a60aab
pdf-font-stream PDF embedded font (sfnt) at offset 0xADD5 5256 bytes
font_01_sfnt_off0000bf98.bin
351fd6c3fa13aa6c2d41f1cd8b429991d04d92a252478b3c55316f92a0c3e426
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF98 12904 bytes