Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b34e195458a21f3…

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 17:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e9894bb4a4e5fe1f047bd0d68430f0ad SHA-1: 53859f0c68babd335cc50ec2830ece122a416660 SHA-256: 0b34e195458a21f330f6f3820f8a74205d84f83e7576dca8c2eec415eb49b0e1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru). The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a lure to download further malicious content. The ML classifier also strongly indicated maliciousness.

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=stratiform+and+podiform+deposits In PDF document text
    • http://nosigima.tonyponella.com/uploads/1/3/1/3/131384244/xilerirosenoga_vunusu_temibilon_faxupoki.pdfIn PDF document text
    • http://files.parishat.com/uploads/1/3/1/6/131606201/8b0f70d1d3.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/1/0429/1756/0473/files/18262412507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3463/0549/files/53976278623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/zadulesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/68246437149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3184/6296/files/jafasajomoraferejiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/nolutujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1304/5398/files/52950978586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8874/7423/files/10373768088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/28153777009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7532/9441/files/c_print_long.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/xubizipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2423/files/99828023497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8946/0376/files/funix.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_off0000620d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620D 5256 bytes
SHA-256: 50006e2619822e825940a8ceb44c8ffa546187fedf51d9752eaeb4b5849845d3
font_01_sfnt_off000073cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CD 10012 bytes
SHA-256: f24802f810e856242fffcb6ae7a7acccb6930c7582ad6d4444af4510c206ad9a

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