Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f60a709dd55c6b9…

MALICIOUS

PDF

45.7 KB Created: 2020-07-31 15:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8677799b68d123eaf17edefbf8fb2d8d SHA-1: 97395244b87561a96157f14c23521b7acbdb91bc SHA-256: 7f60a709dd55c6b909ee6330754cd866f85ccb595c6b2b7f1306a6e8f62be682
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru' with a 'sims 4 skidrow' keyword. This indicates a social engineering lure to trick users into visiting a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to increase visibility. No scripts were extracted, and the document body was heavily obfuscated, but the primary attack vector appears to be the malicious redirector.

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=sims+4+skidrow
    • http://files.growingwithbrock.ca/uploads/1/3/0/9/130969751/kemugiwa.pdf
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdf
    • http://files.charleysplacemorrismn.com/uploads/1/3/1/4/131453188/8937086.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/99005733529.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8374/files/7173389178.pdf
    • https://cdn.shopify.com/s/files/1/0435/2724/1887/files/4938876543.pdf
    • https://cdn.shopify.com/s/files/1/0437/5520/8858/files/dejovupowarakipidukede.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/43773252673.pdf
    • https://cdn.shopify.com/s/files/1/0429/9623/6447/files/49208181689.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3369/files/natazinoluzawaxonized.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/mujukujabawujagezixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2367/files/xuwifigomotovari.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/vopepefik.pdf
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/991414670.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/ramumosa.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/1/0429/9623/6447/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ff.bin
8ce25a3336f4582ebc2b245d613d3f7b656cf5ea4d6f1219a598343fee0026af
pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 5024 bytes
font_01_sfnt_off000076b7.bin
e942f913b6f34d8ab52e627ec7b520ff5ec6b8682d8be56e9a009d53e605dcae
pdf-font-stream PDF embedded font (sfnt) at offset 0x76B7 4560 bytes
font_02_sfnt_off00008630.bin
b2b3c15f29530d974afe8c56599ecc56b2e91964e6f798d579b463cd0ed26d67
pdf-font-stream PDF embedded font (sfnt) at offset 0x8630 10328 bytes