Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cf85a30005b8a63…

MALICIOUS

PDF

53.6 KB Created: 2020-08-25 09:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74606ea23b4c3ca5b25f7233f1838bfe SHA-1: 8b0e182eae289c8b3aeb5400eee1339c070a7e7f SHA-256: 9cf85a30005b8a63235a17dc4f14ea8f1a785145864b3fda627d7256a9d84c1b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bajrangi+odia+film+song'. Additionally, it exhibits a PDF link farm behavior, with numerous links hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the lure. The primary attack pattern involves redirecting users through a malicious link farm.

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=bajrangi+odia+film+song
    • http://lezobe.reikibyberni.com/uploads/1/3/2/6/132682646/fexoz.pdf
    • http://pavelozam.oakieacresfarm.com/uploads/1/3/0/8/130814328/de25f2f.pdf
    • https://cdn.shopify.com/s/files/1/0430/3598/4029/files/vujebuduzimuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7503/5541/files/sinitutatofaxiwugis.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7189/files/55372774555.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/0916/0862/files/infrastructure_as_code_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/libozanok.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/pilanezusemebewuguja.pdf
    • https://cdn.shopify.com/s/files/1/0438/3339/3309/files/arkestra_ke_maal_ha_dj_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/7605/9290/files/56809559010.pdf
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/antiulcerosos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/wowabuwaxibovodotosim.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/1/0440/0

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f6e.bin
211e5bd612b37c6a279a88fa598bf173cce4f73522ca301f671cf2329ff64773
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F6E 4940 bytes
font_01_sfnt_off00009013.bin
61963131364a1388f4aa1366a0a66ef8ccafb74433bc723ad31008fd19beb51d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9013 13816 bytes
font_02_sfnt_off0000bba3.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBA3 4324 bytes