Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75689a5068411c0…

MALICIOUS

PDF

42.6 KB Created: 2020-08-28 17:09:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a3f6faf71ad95c39eb1db2be4a9b23 SHA-1: 58b823d8cb308b0ac6eaa912efb8f462456b3b77 SHA-256: a75689a5068411c096be4347cc50323fd4d3470956ad758f657244bd492d46bf
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised as a search result for a query about dog food. The document also contains a large number of links to other PDFs hosted on Shopify, likely part of an SEO link farm to improve the redirector's ranking. The embedded URL in the document body reconstructs to the malicious redirector URL, indicating a direct attempt to lead the user 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.com/pify?keyword=is+meat+tenderizer+bad+for+dogs
    • http://files.jvsportstalk.com/uploads/1/3/0/8/130874284/vereponefipabe_nomodele.pdf
    • http://files.overcastvapors.com/uploads/1/3/2/6/132695576/101894.pdf
    • http://files.theprideofmayfield.org/uploads/1/3/1/3/131380258/ralaborojusamujosu.pdf
    • http://files.racingshoxsweden.com/uploads/1/3/1/4/131406288/3021123.pdf
    • http://files.francescobaroneweddings.com/uploads/1/3/2/6/132696414/630b225bbff8e4.pdf
    • https://cdn.shopify.com/s/files/1/0432/6483/5737/files/lepuvenij.pdf
    • https://cdn.shopify.com/s/files/1/0464/7531/3302/files/70604322279.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/59633565933.pdf
    • https://cdn.shopify.com/s/files/1/0438/3493/3408/files/english_to_portuguese_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/60093653102.pdf
    • https://cdn.shopify.com/s/files/1/0435/7269/1099/files/dressmaker_zig_zag_sewing_machine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4277/4935/files/algebra_1_test_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/3892/4181/files/terodejotazalorado.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/xunagusizezopugikekomevu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0804/8808/files/35613163177.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/51861230444.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/tosidepudi.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/
    • https://cdn.shopify.com/s/files/1/0433/3905/5258

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006805.bin
c7b77cf8c1629fbf83fb840d74a0edb7df12a995ffeb9aa1fc7ba9708da40435
pdf-font-stream PDF embedded font (sfnt) at offset 0x6805 5320 bytes
font_01_sfnt_off00007a04.bin
27b62cb33f08a651b2ef56cd9adec3798a5bb801991616bffa1b8d72d17404bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A04 10328 bytes