Malicious PDF — malware analysis report

Static analysis result for SHA-256 1915e3573a37d148…

MALICIOUS

PDF

37.5 KB Created: 2020-08-28 15:18:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 518999295f2f03b5ca07d78af1db7699 SHA-1: 2f92c776f8634e385ed1002d3330f76a3e490138 SHA-256: 1915e3573a37d148fc488867022ac22578004054cf5ed65b869c17dd545d0f45
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.me', which is used in a social engineering lure to install a browser extension or update. Additionally, it hosts a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO poisoning or traffic redirection. The document body contains garbled text but includes the same URL found in the redirector link, reinforcing the social engineering attempt.

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.me/pify?keyword=how+to+program+brighthouse+remote+to
    • http://files.vetterleinart.com/uploads/1/3/0/7/130776503/vikikurameb.pdf
    • http://darazo.eleyhooper.com/uploads/1/3/1/6/131606490/purotoboduputo-ferefumuweraja-lilafefase.pdf
    • http://ximines.learningexchanges.org/uploads/1/3/0/7/130775565/9604509.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/92520588019.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdf
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/jamal_ad_din_al_afghani.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1160/files/91646281453.pdf
    • https://cdn.shopify.com/s/files/1/0459/2074/7669/files/beautiful_wallpaper_for_mobile_phone.pdf
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/security_plus_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3124/files/calculus_10th_edition_larson_and_edwards.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/core_concepts_of_accounting_information_systems.pdf
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/jotevim.pdf
    • https://cdn.shopify.com/s/files/1/0433/4098/8575/files/87471980160.pdf
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/sabowikitanuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/fairy_tail_ova_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/8379/2533/files/qaseeda_burda_shareef_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/repuzilawagadirekek.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_off000053f0.bin
9147a874201d5970ab87d2cd8c8b9fb1292b51c71bec1be065c6636d973c4aca
pdf-font-stream PDF embedded font (sfnt) at offset 0x53F0 5392 bytes
font_01_sfnt_off0000662a.bin
7d33f591cdf20d9ddebaeefd6cc6a20c9f62007cda8ed23bef06c3f43f11ce53
pdf-font-stream PDF embedded font (sfnt) at offset 0x662A 10148 bytes