Malicious PDF — malware analysis report

Static analysis result for SHA-256 f162f6492e9a998d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-24 21:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 85cdfdc2474c299b0242c457e04950c2 SHA-1: d2d8f20b8d59eaba30ee57d3246b0c0dbf40a5c4 SHA-256: f162f6492e9a998db13f5ece0ca77a673b761a274b21ae4f4e4a27a5db75bddc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, 24 in total, designed to create a link farm. One of these links, 'https://ttraff.ru/pify?keyword=hrithik+bike+racing+game+mod+apk', is identified as a malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a lure.

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=hrithik+bike+racing+game+mod+apk In PDF document text
    • http://files.upwardfacinglife.com/uploads/1/3/1/4/131436971/velolerulamur_baxafijirun.pdfIn PDF document text
    • http://files.tcspringtraining.com/uploads/1/3/0/7/130740596/zevajisek.pdfIn PDF document text
    • http://files.rockysrockets.org/uploads/1/3/0/8/130874380/b5a5671f544eb8c.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/1/0440/5824/7320/files/equipment_rental_contract_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/83459543916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/25362122618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1582/2747/files/74031531039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/dog_the_bounty_hunter_theme_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/jevipodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3577/files/dog_vaccination_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/welding_of_aluminum_and_its_alloys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/cic_canada_visa_application_form.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_off00005b91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B91 5444 bytes
SHA-256: 303ea0f8ab3be76ed1f33165e2859d8c098fbfcd727e4ad6cb0875e7d0537c23
font_01_sfnt_off00006ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDC 10280 bytes
SHA-256: 06fc0f7f47208b9190774527e57db672c57fdb64ea46fbe2f3170b0bf20c0393

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