Malicious PDF — malware analysis report

Static analysis result for SHA-256 86cfa0a4b8a45680…

MALICIOUS

PDF

50.1 KB Created: 2020-08-21 10:49:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b215d20847502d7c08b1b7f8a224847 SHA-1: 2fdaf9e6af56fc23cd297463bce461458ce42073 SHA-256: 86cfa0a4b8a456800cbb0eb4adff3c6f7e912f0bf7495b087749177b22e70a18
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `ttraff.ru`. The document body, though heavily obfuscated, contains the same URL and text related to movie downloads, suggesting a lure. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm used for SEO poisoning or distributing malicious content.

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=abcd+malayalam+movie+free++tamilrockers
    • http://gegelido.madagascarfaunaflora.org/uploads/1/3/1/1/131164250/vurususinozu_dorexe_gogukevafadus_jesafatolu.pdf
    • http://files.psyencholotry.com/uploads/1/3/1/4/131438337/milesa_turiwixamu_suxetesodofoso.pdf
    • http://files.puggeroomie.com/uploads/1/3/1/4/131407233/995a737.pdf
    • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/sales_and_marketing_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rixozuxixewu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6032/0669/files/90171352489.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/jotifan.pdf
    • https://cdn.shopify.com/s/files/1/0452/2380/5079/files/root_cause_analysis_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/fumesawelorubejupapede.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/75213768813.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/gozetegego.pdf
    • https://cdn.shopify.com/s/files/1/0439/0351/6827/files/12284324839.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/grade_10_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5811/files/rejuwidabajav.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/mifubitefut.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_off00006fd5.bin
6e6c022ff86d06ce3389bfe92fe27aec7a33d3dc66e22f13dc6887b71b3514e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD5 5524 bytes
font_01_sfnt_off0000828d.bin
2aefcc7f80ac79a34334ab9723c2384e6e7c589261637aef4c4c1511c2493c66
pdf-font-stream PDF embedded font (sfnt) at offset 0x828D 10120 bytes
font_02_sfnt_off0000a56e.bin
4bd16c8abd39118228c1571b0005d4eb3b3e943e572fd92a2a80cfcb7b749349
pdf-font-stream PDF embedded font (sfnt) at offset 0xA56E 16164 bytes