Malicious PDF — malware analysis report

Static analysis result for SHA-256 50f54a1843736d68…

MALICIOUS

PDF

76.8 KB Created: 2020-08-07 21:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53090d784ad6b17f0812e1a600565f7f SHA-1: 87f4c7a14e83616ab8396894d58417c6359eb52d SHA-256: 50f54a1843736d681f4037b186d82ec8f85a24d2291323552e1b34d339f6cfd5
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a callback lure suggests a potential phishing or scam 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=acute+myocardial+infarction+pdf In PDF document text
    • http://files.atlanticartgallery.com/uploads/1/3/0/7/130776661/zesiruvowox.pdfIn PDF document text
    • http://files.emact.org/uploads/1/3/1/3/131384407/sovibodopagimetevub.pdfIn PDF document text
    • http://files.keepeducationpublic.org/uploads/1/3/1/6/131636719/zebat-gazileda-kazif-liferonopafene.pdfIn PDF document text
    • http://files.violaadvisory.com/uploads/1/3/1/8/131857305/5956941.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6675/1131/files/69130412880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8529/9876/files/xedijiwabobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4288/2215/files/minecraft_survival_games_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/70476609799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/lokupevadurakepisejewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/gasazarab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2682/files/belobupifitototuremilowed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/fun_nightbot_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/98783493463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3763/files/bonexuzirixizelilabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/elements_of_electrical_engineering_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/51492930874.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
🗂 Part of campaign: 2424nfederalhwy.com 5 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC9 5096 bytes
SHA-256: 13d04b54ee37e075ed53258df5eb01b8d5f259b7c22d78d62d9ab1c7931b58f5
font_01_sfnt_off0000f109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF109 11832 bytes
SHA-256: 4ff3a200890598659d829a8d3d5e464e762d75ebb74ef87dc5a62c9c216bc7bf
font_02_sfnt_off000117e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E2 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3