Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea83b9998120df35…

MALICIOUS

PDF

114.8 KB Created: 2020-08-01 06:55:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20a669cc89b87c3494ebce2cf5c7819e SHA-1: 3cef3d6b6c4b72757fbb5e9fb1c19fd04be437ae SHA-256: ea83b9998120df35d138c1ffe6769c9a5efd3faf46b8a5c1850e69b0920f5fdd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a search query for a vehicle manual. This link points to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The ML classifier strongly flagged this PDF as malicious, and heuristic rules indicate it's a redirector and part of a link farm.

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=1994+ford+explorer+owners+manual+pdf In PDF document text
    • http://files.reelanimaltalent.com/uploads/1/3/1/8/131872087/bosofajobos.pdfIn PDF document text
    • http://files.youngconservationists.org/uploads/1/3/2/6/132680870/lukewowesenipuzobixe.pdfIn PDF document text
    • http://files.nataliebratcher.com/uploads/1/3/0/7/130776393/kejoxetonakure.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/1/0430/6773/6225/files/sowapilamowomesudamal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3558/8770/files/44145885235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/45279589442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7602/6522/files/38055068497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/xazovadulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/40288164604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/kuruxixujidiwuziwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/17861202069.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/17930788022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8691/3431/files/mafebuzawivifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0348/6103/files/36271253268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5287/4390/files/kaxusigaridubonegirufa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0001654d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1654D 5548 bytes
SHA-256: 29b7502b3513d4bb65f872e1e18952ef6051b5505b4999358107284ff88984fb
font_01_sfnt_off00017832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17832 15432 bytes
SHA-256: 36608cbd7df1c70e605a9b92156514e91f90352b2a0b25db41a4c74227d73e64
font_02_sfnt_off0001a8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A8ED 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c

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