Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a814bb667d5915a…

MALICIOUS

PDF

44.4 KB Created: 2020-08-17 15:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 733e6607364458ca7a8090acc27d25db SHA-1: 2f4a73deb476858cbb5091f6eeabd20609b7d1fb SHA-256: 2a814bb667d5915a02352fae0511aea895d927dd58bcc8a2e961cff2cb62533a
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to shopify.com, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or SEO poisoning tactic to lure users to malicious content. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted, limiting the analysis to the PDF structure and embedded URLs.

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=descriptive+statistics+for+data+analysis+pdf
    • http://files.naturalicatchirhythms.co.uk/uploads/1/3/1/6/131606546/lotemeselorowas.pdf
    • http://rekoj.reformanortheast.org/uploads/1/3/1/3/131380600/mitesawal.pdf
    • https://cdn.shopify.com/s/files/1/0434/6026/4086/files/bartleby_the_scrivener_trke.pdf
    • https://cdn.shopify.com/s/files/1/0438/3929/1554/files/zerikemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/5263455393.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0425/files/hernia_hiatal_medigraphic.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdf
    • https://cdn.shopify.com/s/files/1/0447/4460/5845/files/fuxizamojufekesus.pdf
    • https://cdn.shopify.com/s/files/1/0443/1344/4508/files/esame_celi_5.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/list_of_acids_and_bases_with_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0439/6023/8238/files/11903095923.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_off0000610f.bin
01934041bded523bb3635f9e7bb54c8bfa6079f37275dbbbe67b1d00bbbf4008		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 5100 bytes
font_01_sfnt_off00007284.bin
3c86d33d356df20b9d279951e68ae7e2b545b75e417b8c645fa9ca8d34c028d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7284 10784 bytes
font_02_sfnt_off000096b6.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96B6 4324 bytes

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