Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf1f826ea0949b1…

MALICIOUS

PDF

38.3 KB Created: 2020-08-14 17:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2242e3b34972465fdd79d0495978786 SHA-1: 4ad472799ccd0a1de19258a5cee91ce132dd191b SHA-256: abf1f826ea0949b144efa06e18d019e7579e0f4cecea69c608f1f3a670d64c1e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and references a video, suggesting a lure for users to click through to malicious content. The ML classifier strongly indicates maliciousness, and the presence of a link farm points to SEO abuse for traffic redirection.

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=baazigar+ka+gana+video In PDF document text
    • http://files.youthadvocatespdx.org/uploads/1/3/0/7/130776022/dubaxovojopo-senaradag.pdfIn PDF document text
    • http://kepowoliv.bmcbooks.com/uploads/1/3/1/6/131606490/5a624b2ef5da.pdfIn PDF document text
    • http://files.twoshade.com/uploads/1/3/2/3/132303270/d1bbfc50a7bcc78.pdfIn PDF document text
    • http://bosufu.laceibajournal.org/uploads/1/3/2/8/132814930/30b1d18a40b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2400/6820/files/3918342842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/jewupep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/99495416693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5287/5432/files/rationale_of_the_study_in_research_proposal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/burewarunexesuzuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5303/files/wezinikulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4487/1063/files/vexojanolujadesezegaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1883/6389/files/metformin_side_effects_on_menstruation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0399/2474/files/14548775260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/9932924021.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46CA 5004 bytes
SHA-256: d20189b2c10908b1e559cbfd1dce571ff34ab5b3dd3aa1bce6b8c7991cd11af0
font_01_sfnt_off000057ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57EC 12428 bytes
SHA-256: 8e7cf3b5c82395082169a7e5a538081c9b5d5126724619b0f8e5978e9caa4c7e
font_02_sfnt_off00007ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFC 3124 bytes
SHA-256: c26c10433b2754c2e8d4e2a5e44f353bff5f6629f91b4859873827503b438151

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