Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb33a71be77ca74d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-24 08:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ca2489ba026ace30ceafb8f31c24d98 SHA-1: 5a716605bf722ed53c1a61217e4730615c7d71e5 SHA-256: eb33a71be77ca74d3d3b46a52173b3dde48e83e754a79392652b10e6c5a4d845
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=baritone+horn+sheet+music'. The document body, though heavily obfuscated, contains references to sheet music and URLs, suggesting a lure. The presence of a link farm heuristic further indicates malicious intent to distribute links. The primary attack vector appears to be tricking the user into clicking the malicious link disguised within the document.

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=baritone+horn+sheet+music In PDF document text
    • http://gabitos.centralillinoishydrografx.com/uploads/1/3/0/8/130874676/pidubebaguk_dofaliradapekop_legoromumedodo_wamakidexofu.pdfIn PDF document text
    • http://japamaluv.astaseattle.org/uploads/1/3/1/6/131606354/nuvomusemudedun_vulegopa_lefug.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/1/0434/2723/3954/files/autobus_marbella_malaga_aeropuerto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/didukudalin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/lexototeguki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/70364772179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7637/6983/files/how_to_make_a_webhook_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/xumutarijopaxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/32626034615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/wordly_wise_3000_book_8_lesson_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8492/7396/files/auditoria_administrativa_evaluacion_y_diagnostico_empresarial_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2681/5895/files/jutezujajev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/atkins_fisicoquimica_descargar.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
🗂 Part of campaign: narrinspiceandsauce.com 8 samples

Related samples 2

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_off0000660a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660A 5056 bytes
SHA-256: 412e9801e6e78166aecf6a3ec91f33419f16d8c363e3eecf1016602a0a055148
font_01_sfnt_off00007709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7709 10220 bytes
SHA-256: 9409874d372a7c99a4f9620607a53481cc6316b30ca6104392fe385fb632f696

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