Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d656fb29e5d7b40…

MALICIOUS

PDF

46.6 KB Created: 2020-07-29 11:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f0bd9940f99f3b29afddef0ae3cad7d SHA-1: 7e17c517e67a05b3a9f2d526a236010d0f8f2fe9 SHA-256: 0d656fb29e5d7b40c583bd036a2f32d3b94901442a41eb5fc1bf2c319a4fb451
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=certified+analytics+professional+pdf`. This suggests a phishing or malware distribution lure, likely using the document content as a pretext. The ML classifier strongly supports the malicious nature of this PDF.

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=certified+analytics+professional+pdf In PDF document text
    • http://files.byronwashington.org/uploads/1/3/2/7/132710763/wapabozogu-dakolaju-kokirup-tosuguwixeg.pdfIn PDF document text
    • http://files.abatelakechapter.com/uploads/1/3/2/3/132302780/3ad94d.pdfIn PDF document text
    • http://files.hirzelinteriors.com/uploads/1/3/1/3/131398419/dokojevupex.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/1/0433/6982/4407/files/56809568314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8670/7876/files/dofovodademenafijut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0594/9590/files/82648113369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3549/2503/files/vawovuvanoxiwajan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/47768963618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/tujuwajexipefuzapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/faliza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7711/5810/files/lifuberexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/numapezuluxonobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6420/5216/files/26693168294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8166/2628/files/puxujofebewivugixo.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 7

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_off000075a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75A2 5060 bytes
SHA-256: 3df04257677b8cbce7ad84e2bc4d523a59bf475c010014f42b19144182143457
font_01_sfnt_off000086ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86ED 10968 bytes
SHA-256: f990ddaf7dbbfbb5bf59cf383ef545c7eadf7b3ff9a0436e24d1daa1ec721b30

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