Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1bd79457b791c19…

MALICIOUS

PDF

51.7 KB Created: 2020-08-08 22:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7488888eba3f2257b8a88d6c28848513 SHA-1: 33326a2fea8046a48fc33f8c4b5db3ae58090809 SHA-256: d1bd79457b791c199706df035a7e2429d9d857f2cb15764c109a412cd7ac9cbf
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic firing indicates a direct link to a known malicious redirector, ttraff.cc. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary goal appears to be directing users to malicious infrastructure.

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=simethicone+davis+pdf
    • http://wunemerur.lavarsteelart.com/uploads/1/3/0/8/130873822/9819173.pdf
    • http://files.lonestarnstra.org/uploads/1/3/0/8/130874458/530e8468bef9.pdf
    • http://files.cecilyeiferle.com/uploads/1/3/0/7/130776850/somakiwino.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/wufogediragegibotes.pdf
    • https://cdn.shopify.com/s/files/1/0431/7881/9735/files/48720451450.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5842/files/79710966100.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/game_engine_architecture_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/9268/0611/files/43756925701.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/jafovipusapesojejag.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/kaxavujigunal.pdf
    • https://cdn.shopify.com/s/files/1/0432/3442/7047/files/25476302929.pdf
    • https://cdn.shopify.com/s/files/1/0438/7697/4747/files/algorithms_to_live_by_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/wibifodikapulilokijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/gijitevatajesagiwiwaxi.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_off00008b87.bin
26713af097fc98384554643c16df988c3a7d0f1b7d57143126b12ddc39fe271e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 5428 bytes
font_01_sfnt_off00009de3.bin
b4babb18d81369f33889f481e3aeb92713d9c21ed3326fff27d6a2983c5cffd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE3 10652 bytes

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