Malicious PDF — malware analysis report

Static analysis result for SHA-256 2428e7510f335ad7…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 13:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5603b44276b0630e319a1564acdd0b30 SHA-1: b328bd706efaa5971983c93376db6f33727f01c9 SHA-256: 2428e7510f335ad745f05c28a556e4c1747dcb6ccb94c1a317674fa57296ed90
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links directs to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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=markdown+to+html+python
    • http://files.circlecamps.org/uploads/1/3/1/4/131407144/d5c6e.pdf
    • http://files.joegrabowski.com/uploads/1/3/1/8/131857465/bikesito.pdf
    • http://files.simplyskinandbody.com/uploads/1/3/1/4/131438471/dulixuzom_lojokidoda_fivoxovano.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/xudobam.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/26496478310.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/52823619535.pdf
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/27844884065.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/83263557401.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98012128422.pdf
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/58306180664.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/wabolufisajonegigob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/56918616029.pdf
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/tafumakogonojis.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/vakexevanufanevuduzadiv.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_off00005c36.bin
8502b56cb6347bd8023d671e30f0a6a7b0a1e143cf69ed301d14b36b9eb96b22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C36 4908 bytes
font_01_sfnt_off00006cc4.bin
211c0e99e87ffe922ea160e562cbd49c3fa2263e9ac1dcde031a08ce83325310		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC4 13120 bytes
font_02_sfnt_off00009738.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9738 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.