Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f36017bcf271eb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 12:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 297ab8be4eb96025d439a7cdc65f64be SHA-1: b9faa3cea13557b48ab59558dd7317c6b2f1fe55 SHA-256: 95f36017bcf271ebd0d3a4b3c64fbb2965816ac4d5a9b719ab521b4a865be07a
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=apache+kafka+pdf+download'. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or redirection strategy. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to a malicious site disguised as a legitimate download.

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=apache+kafka+pdf+download In PDF document text
    • http://files.riderpolo.org/uploads/1/3/2/7/132712129/sodirizevozuburomoli.pdfIn PDF document text
    • http://files.sacontracting.org/uploads/1/3/1/8/131857782/luragogiletimo.pdfIn PDF document text
    • http://files.martinaswinburn.co.uk/uploads/1/3/2/7/132741334/vifuvixigesa_vemuv_toraregukev_xupakebenotame.pdfIn PDF document text
    • http://pasemox.biofieldtuning-nj.com/uploads/1/3/0/8/130813612/marimeweber.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/1/0427/4746/1788/files/daxakukopugabuvudunevit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/felezewesadorolev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0214/9540/files/gungeon_big_boy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3820/3290/files/35319803786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/13950338349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/analyzing_poetry_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8938/5888/files/46790891678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/faduxome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/jegijozojabagoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/free_boat_building_plans.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/39311046616.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 1

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_off000066f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F0 5112 bytes
SHA-256: 7345424bc26444c2b77b13433753b7d03c9aa46c10979377b3c49021f0e1c084
font_01_sfnt_off0000786d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786D 12152 bytes
SHA-256: f3bf20f95184e36eba263723467756413809df9a9ff5a0aef768146da3448952

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