Malicious PDF — malware analysis report

Static analysis result for SHA-256 259996cc5dffea5d…

MALICIOUS

PDF

49.2 KB Created: 2020-08-04 20:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 69f0f4e997d7fd30154f111ea3d644c4 SHA-1: 912ee1a9ae5a54fa63fe0b16365a8f470207e47d SHA-256: 259996cc5dffea5d952e44637d436c3501692c018f90098e8887f072b8e9d6be
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=introduction+to+mechanics+of+composite+materials+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. Additionally, a PDF link farm heuristic was triggered, suggesting a broader campaign to generate traffic. No scripts were extracted from this sample.

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=introduction+to+mechanics+of+composite+materials+pdf In PDF document text
    • http://files.opticalonlinestore.com/uploads/1/3/0/7/130738870/7ef4081.pdfIn PDF document text
    • http://files.justiceforallcanada.org/uploads/1/3/2/8/132816041/6665718.pdfIn PDF document text
    • http://files.vcgallery.org/uploads/1/3/1/8/131856381/rokererukirejakifu.pdfIn PDF document text
    • http://files.sgtnatefitness.com/uploads/1/3/0/7/130775970/4557115.pdfIn PDF document text
    • http://files.elisabethlagrone.com/uploads/1/3/2/3/132303270/tusexop.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/1/0435/1007/1448/files/perudidilim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/nepali_full_movies_kohinoor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0639/3496/files/boviribezebeposororu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bewasovenajuwawofitef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9988/1639/files/saziburikol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7505/2454/files/23233471045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/13567968007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1416/7450/files/gepavire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5671/6186/files/11777121257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6340/files/4009418750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/doheny_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/85967738361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/troy_bilt_pressure_washer_3000_psi_manual.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_off000082d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D7 5332 bytes
SHA-256: aa106110b9e8ceda44ab8fe74a795512e96b703a936b8e0f290edd5ef6ae2638
font_01_sfnt_off000094c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94C8 9972 bytes
SHA-256: cadd329a55abac80850977b25021e8c6f320717eaf4485c0dff276147bd7601d

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