Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea33141986b017ad…

MALICIOUS

PDF

39.7 KB Created: 2020-08-21 08:07:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bafb30924bcf7beb9fe5145b9a2fb095 SHA-1: 001ad215a42b3883ac779951602ecf37352cc6e8 SHA-256: ea33141986b017ad0f6c400378abc76aaf5591dd881dcf68c56f4dfe1301d536
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a redirector service (ttraff.com). This indicates a link farm strategy, likely intended to obscure the final malicious destination or to distribute malware. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was largely unreadable binary data, but the presence of the malicious redirector link is a high-confidence indicator of malicious intent.

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.com/pify?keyword=1%252F+4+inch+sheetrock+ceiling
    • http://files.loggerstrace.net/uploads/1/3/1/0/131070113/1246518.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/17642396402.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/rinurof.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5554/files/72230582251.pdf
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/lupakenipedomuwip.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/xibatovanaxekanukuvamufi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/36020381053.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/firefly_episode_order.pdf
    • https://cdn.shopify.com/s/files/1/0428/4376/6950/files/1978_cessna_172n_poh.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/minecraft_bobbejaanland_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/4793/4359/files/anglomaniacy_food.pdf
    • https://cdn.shopify.com/s/files/1/0432/8603/6646/files/pdf_converter_to_word_document_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/47225455153.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_off00005e3c.bin
2ad1e321dbd349e5979498b636169122513a732a6ee64987e6b31b3cbc1721ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 4996 bytes
font_01_sfnt_off00006f3d.bin
e4eb6a62bc42f359c2596fb8ab77f8c7fc641249b6d04a39c67ff194abf2fe93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3D 10240 bytes

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