Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf68601ce31aa9f…

MALICIOUS

PDF

67.8 KB Created: 2020-08-29 19:36:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97d35d163a7ec19272c8131bbb4e9656 SHA-1: 21e7f707f71f26f0459f98ff886cf6ec0493870c SHA-256: bdf68601ce31aa9fa885b3c089a6b3ce47be02e9c69664885b8c91796a1e3104
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a link to a 'trainspotting book pdf'. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to 'static.usrfiles.com'. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering, tricking the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=trainspotting+book+pdf
    • https://static.usrfiles.com/ugd/ce0e6d_adcfaa4c7e1f464ab45cf8c873603353.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ce9fba7b8f487da62bb35dc16ce0a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_857c255524c6409693826e350401f542.pdf
    • https://static.usrfiles.com/ugd/b8c837_791fd0c048c3440aaea525b831fe53db.pdf
    • https://static.usrfiles.com/ugd/b8c837_7179e4a896db4a4b8894c3dffc7416ca.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e551826a3394389b3bcb35e37064770.pdf
    • https://static.usrfiles.com/ugd/a382ee_ed26088e3fbc4a80b715a13e83ce3800.pdf
    • https://static.usrfiles.com/ugd/b8c837_6488a0cfe728435b831603c2fb947484.pdf
    • https://cdn.shopify.com/s/files/1/0451/4267/1513/files/33684518485.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3614/files/positive_thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0459/6223/1967/files/xiset.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/46967555738.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdd3.bin
197dcbd4762eac58224da97b335e37ed7f954e615c8fdbc62482ee1f9d17ddb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD3 5328 bytes
font_01_sfnt_off0000dff9.bin
46d8f31d22fd9bc99b404917c6e45d14780216a4dae0608115a87aa1e9502447		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF9 10144 bytes

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