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) First seen: 2026-05-08
MD5: 518999295f2f03b5ca07d78af1db7699 SHA-1: 2f92c776f8634e385ed1002d3330f76a3e490138 SHA-256: 1915e3573a37d148fc488867022ac22578004054cf5ed65b869c17dd545d0f45
234 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.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 In PDF document text
    • http://files.vetterleinart.com/uploads/1/3/0/7/130776503/vikikurameb.pdfIn PDF document text
    • http://darazo.eleyhooper.com/uploads/1/3/1/6/131606490/purotoboduputo-ferefumuweraja-lilafefase.pdfIn PDF document text
    • http://ximines.learningexchanges.org/uploads/1/3/0/7/130775565/9604509.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/92520588019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gimuwuwizarisatin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0609/8597/files/jamal_ad_din_al_afghani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0545/1160/files/91646281453.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2074/7669/files/beautiful_wallpaper_for_mobile_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8191/4781/files/security_plus_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3124/files/calculus_10th_edition_larson_and_edwards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/core_concepts_of_accounting_information_systems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/jotevim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4098/8575/files/87471980160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/sabowikitanuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/fairy_tail_ova_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2533/files/qaseeda_burda_shareef_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/repuzilawagadirekek.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53F0 5392 bytes
SHA-256: 9147a874201d5970ab87d2cd8c8b9fb1292b51c71bec1be065c6636d973c4aca
font_01_sfnt_off0000662a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662A 10148 bytes
SHA-256: 7d33f591cdf20d9ddebaeefd6cc6a20c9f62007cda8ed23bef06c3f43f11ce53