Malicious PDF — malware analysis report

Static analysis result for SHA-256 3716d656ad6e4e87…

MALICIOUS

PDF

45.9 KB Created: 2020-08-18 14:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8791f56a042c727276385b7f53a99365 SHA-1: b47cc6db836e717a1e8804f7f8aad12243e1df27 SHA-256: 3716d656ad6e4e87b65a225200e9cfbc85ae1cbe2a5e88e34fe8a8c55c58b126
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is disguised as a Husqvarna automower manual. This redirector likely leads to a malicious payload or phishing page. No scripts were extracted from this sample.

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=husqvarna+automower+manual+420
    • http://files.emteches.com/uploads/1/3/0/7/130738714/sagak.pdf
    • http://sokuzita.charlesabailey.com/uploads/1/3/1/6/131636725/9588210.pdf
    • http://files.anthonybarnesboxing.com/uploads/1/3/1/6/131637254/2133030.pdf
    • http://files.biosciencelabs.co.uk/uploads/1/3/1/4/131454090/20718714edd8d4.pdf
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/59917811752.pdf
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/69176628295.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7247/files/meviruboki.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/35957042199.pdf
    • https://cdn.shopify.com/s/files/1/0438/2189/1746/files/geankoplis_transport_processes.pdf
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/88922058401.pdf
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/pajigixupun.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/kendrick_damn_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/kemexopadaxovon.pdf
    • https://cdn.shopify.com/s/files/1/0431/8209/6535/files/possessivpronomen_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/93916998241.pdf
    • https://cdn.shopify.com/s/files/1/0434/4581/3413/files/business_environment_and_concepts_bec.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/rixasimolewunaroriki.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
font_00_sfnt_off000061fc.bin
8e977c102f713e2ebe4ef9cb8fdb9ea0d1ba00da5fb5ac34e189cfd9e227b856
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FC 5264 bytes
font_01_sfnt_off000073e0.bin
4659768b5fe3a1e050e23921221969f996f7193c4174050f4cbf571cb744c419
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E0 12684 bytes
font_02_sfnt_off00009c7a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7A 4324 bytes