Malicious PDF — malware analysis report

Static analysis result for SHA-256 3caca13169b66166…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 10:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c90c905565d7b3aac61ea256e65db325 SHA-1: f19da505f7f51a1133974b2927de98410b199104 SHA-256: 3caca13169b6616688085aac001d07d782e74ce3eb031f7cdc4dfb192714dc58
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution: Malicious Link T1566 Phishing

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to known malicious infrastructure at ttraff.ru. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document's content is designed to trick users into installing software. The primary malicious URL is https://ttraff.ru/pify?keyword=chrome+app++apkpure, which is likely part of a social engineering attack to deliver malware or steal credentials.

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=chrome+app++apkpure
    • http://verebox.austintxapartmentsexpress.com/uploads/1/3/1/4/131437595/2649451.pdf
    • http://files.boulderartscouncil.com/uploads/1/3/1/6/131606150/5cd43.pdf
    • http://pudulezuj.graphiclibrary.org/uploads/1/3/1/4/131437318/mevujodufilew_sefevuno_bosubunulun.pdf
    • http://fotiguve.nirunutrition.com/uploads/1/3/2/6/132681513/44eeba25cd.pdf
    • http://dewemox.rmarredondocoaching.com/uploads/1/3/1/6/131606162/simemipagalusefi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/system_dynamics_karnopp.pdf
    • https://cdn.shopify.com/s/files/1/0447/5237/1863/files/automatic_transfer_switch_using_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8565/files/ortopedia_y_traumatologia_silberman_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0430/8497/2183/files/apple_itunes_64_bit.pdf
    • https://cdn.shopify.com/s/files/1/0433/2063/9646/files/xesite.pdf
    • https://cdn.shopify.com/s/files/1/0440/9422/6584/files/jewosefefimobilike.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/jabije.pdf
    • https://cdn.shopify.com/s/files/1/0435/3949/7112/files/10324410055.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/wavefront_guided_lasik_near_me.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/8152046931.pdf
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/emmerson_business_english_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/tefojumune.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_off00006626.bin
f0fc945fd3ae3d59041fe8eb430db9b2886b12d8862e8ddcdeac67e5aabf80c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6626 4816 bytes
font_01_sfnt_off0000765b.bin
38cf6d6ebe3188168eb228bd812e033f7b7990777fb0dafed3036c3366d16842
pdf-font-stream PDF embedded font (sfnt) at offset 0x765B 10372 bytes