Malicious PDF — malware analysis report

Static analysis result for SHA-256 750c519a09057a71…

MALICIOUS

PDF

59.6 KB Created: 2020-08-12 09:06:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33e16033817a3b26fdd0804ebf073241 SHA-1: 209efba33326bcdd267ff6c2344c6470473ff740 SHA-256: 750c519a09057a71d8df54da32cade07e211fa2c9dbc0aeaabd9cedbbde6bbfd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body and embedded link structure suggest a tactic to drive traffic to potentially malicious sites, possibly for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=remedial+mathematical+biology+pdf In PDF document text
    • http://files.fearlesscounselingservices.com/uploads/1/3/0/7/130775102/7459c3f28636.pdfIn PDF document text
    • http://files.cornerhealthfoods.com/uploads/1/3/1/4/131453725/fd9955.pdfIn PDF document text
    • http://files.springhillgardenclub.com/uploads/1/3/0/7/130776366/170465.pdfIn PDF document text
    • http://files.joannasholistictreatmentclinic.com/uploads/1/3/1/4/131438274/0a14f.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/1/0437/7142/9016/files/apologize_piano_sheet_music_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/59544111840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/football_manager_2015_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3458/0891/files/50550359856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4143/2487/files/zeluzeromosekojiwitig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8903/files/67524944131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0509/files/fopavarovonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6083/0108/files/40072080646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3531/0745/files/lekelise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/mastering_blockchain_2nd_edition_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/21089889359.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA983 5544 bytes
SHA-256: 3d59e0251302d6ec80cd0140e4042eb40ae4fcb524f15eb5c2207679c19933f8
font_01_sfnt_off0000bc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC4A 10420 bytes
SHA-256: ef8bbbeda387939839775c49b4c27fb7d074c743e30d2b486a359c1361072340

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