Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a428c3fa7acb828…

MALICIOUS

PDF

73.2 KB Created: 2020-08-24 01:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57e85766e4cef80163d904eca55af1a5 SHA-1: 474d0b2b19437569b1638df1dd4d82d407cc720e SHA-256: 8a428c3fa7acb828a2c550eb65eac09e004ffd1c841b7b14f03436ee8a87aa50
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect to malicious infrastructure. One such redirector URL is https://ttraff.cc/pify?keyword=commander+keen+2. The document body itself is heavily obfuscated and contains this same URL, suggesting it is the primary lure. The presence of numerous external links points towards a strategy of distributing malicious content or phishing attempts through a 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.cc/pify?keyword=commander+keen+2
    • http://vinusoki.junkremovalvegas.com/uploads/1/3/1/4/131437987/motizefusefu.pdf
    • http://files.icanfitinthat.com/uploads/1/3/1/8/131856133/5256353.pdf
    • http://dagabu.ccfsealytestsite.com/uploads/1/3/1/4/131453323/b3d35e64.pdf
    • http://fifino.drvegetableinc.com/uploads/1/3/2/3/132302868/85ad8af17809.pdf
    • http://zemeparuv.omahabeadaffair.com/uploads/1/3/1/8/131871726/vonizuxoremevupuni.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8501/files/zezokoma.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdf
    • https://cdn.shopify.com/s/files/1/0461/9999/6569/files/lugogodoso.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/16146926909.pdf
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/senagigulavat.pdf
    • https://cdn.shopify.com/s/files/1/0432/6142/7867/files/muxepakiligiwupuda.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/domixopuzizumiradekari.pdf
    • https://cdn.shopify.com/s/files/1/0432/0270/7616/files/bowusofovoseladab.pdf
    • https://cdn.shopify.com/s/files/1/0447/4735/8362/files/98231605704.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/segavobowilitufokako.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_off0000d4cb.bin
68c2d1291106e1884c66de68c3b44eab73fbeb6b4cd28136b61e2e58824c7789
pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CB 4640 bytes
font_01_sfnt_off0000e45c.bin
d1ac5ebd244a10d843884ac842ee60da7dfc6f0dcabd1a9b71d6b44107ffc853
pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 10916 bytes
font_02_sfnt_off000109b4.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x109B4 4324 bytes