Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d696edfae39be3a…

MALICIOUS

PDF

41.1 KB Created: 2020-08-27 22:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 171ee3a25c300a8f41e6cf90c58bd119 SHA-1: d45ebffde2cb463e04421325e74b264a65062d75 SHA-256: 9d696edfae39be3ab84872af8cad747616c7dd296b9cf0abdbd0ef4677b3cb2d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a social engineering lure, instructing the user to install a browser extension or update to view content. It also contains a link to a known malicious redirector, ttraff.ru, which is likely used to deliver further payloads. The document body itself contains obfuscated text and embedded URLs, including the malicious redirector and a link to a Shopify domain that hosts a PDF file, suggesting a link farm for SEO manipulation to attract victims.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=blank+bookmark+templates+to+print
    • http://files.svwca.org/uploads/1/3/1/4/131437276/7627816.pdf
    • http://files.leiawood.com/uploads/1/3/1/3/131379168/7632153.pdf
    • http://tulez.cancermessedwiththewrongfamily.com/uploads/1/3/1/8/131857419/2649127.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/viletebakaxuwagep.pdf
    • https://cdn.shopify.com/s/files/1/0443/1711/4524/files/mojubijimamadipibuva.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/gumelegifapozeliwopixen.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/29294029444.pdf
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/answers_to_crossword_puzzles_with_friends.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5765/files/some_assembly_required_ffxiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6518/0314/files/jubisubuseseparuzeni.pdf
    • https://cdn.shopify.com/s/files/1/0437/9013/9549/files/rasimakonezu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/68066291686.pdf
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/28587040718.pdf
    • https://cdn.shopify.com/s/files/1/0465/4704/2462/files/dominus_choir_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7596/files/app_store_apk_install.pdf
    • https://cdn.shopify.com/s/files/1/0434/5082/6919/files/arabidopsis_thaliana_as_model_organism.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_off000062f0.bin
4f53b012d12fec3492fa2650292721518578db5ceb47605d245b2229df81bffe
pdf-font-stream PDF embedded font (sfnt) at offset 0x62F0 5220 bytes
font_01_sfnt_off0000748f.bin
639e0136d70d12f1fb24b076b14f4ae161c0d1d54f726b2e48b6c0fd3061de1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x748F 10332 bytes