Malicious PDF — malware analysis report

Static analysis result for SHA-256 39cd460f081b056e…

MALICIOUS

PDF

48.7 KB Created: 2020-08-25 11:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d14b9a94f46ce4aa484f8cb6b22d9123 SHA-1: 5182bcac5a2cbde6c72210d7f99c704e0127ddc4 SHA-256: 39cd460f081b056e0c4142ca79493324ff52ca7d78bd8e7663caff7bccd422b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links designed to appear as legitimate downloads, but they redirect to malicious infrastructure. Specifically, the link https://ttraff.ru/pify?keyword=mathematics+textbook+for+class+7+pdf is identified as a malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt to drive traffic to malicious sites, likely for further exploitation or malware delivery.

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=mathematics+textbook+for+class+7+pdf In PDF document text
    • http://files.plumbingandgasheatinguk.co.uk/uploads/1/3/0/9/130969032/filudufetanorot.pdfIn PDF document text
    • http://wetazipiz.carlsoncattlecompany.com/uploads/1/3/0/8/130813509/mepoluvuvadoro.pdfIn PDF document text
    • http://files.mcmillinautomation.com/uploads/1/3/2/7/132710780/3614628.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/1/0450/2549/3150/files/clinical_pharmacokinetics_of_aminoglycosides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3823/8878/files/pisogilawurij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8951/1068/files/sample_ovpn_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7272/3875/files/70106083794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3361/6803/files/wumosutenazufixif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/69464187999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1393/9110/files/40019723682.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/sipotonoxixegaditijev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/zosekiduniwoninisolafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6318/9405/files/ap_stylebook_2015.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 3

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_off00007e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E63 5752 bytes
SHA-256: 1716753be08cac3643aecff1cc2a4d9ba176cdce6efd9090483af9e7abfdfd55
font_01_sfnt_off000091d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 10532 bytes
SHA-256: dcfa9770d65c4ef61d7259085f1aac5f24aee0642655664c289bd979cfe72cdb

Open this report in the interactive analyzer, or submit your own file for analysis.