Malicious PDF — malware analysis report

Static analysis result for SHA-256 4db7c9db472ed9d2…

MALICIOUS

PDF

51.7 KB Created: 2020-08-06 01:28:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3019046847ad6ed22a478cfa5813c2f0 SHA-1: 9f4c52f65e6773d4ffff2230d1ca45b022e0513b SHA-256: 4db7c9db472ed9d22edd700f4c4393da9e423c0987736f6ce6e2ca5e2e4b16c2
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL identified is https://ttraff.ru/pify?keyword=batman+the+dark+knight+returns+comic+espa%25C3%25B1ol+pdf. This document likely serves as a lure to download further malicious content or lead users to phishing sites.

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=batman+the+dark+knight+returns+comic+espa%25C3%25B1ol+pdf In PDF document text
    • http://files.milkywayenglishretrievers.com/uploads/1/3/1/4/131483254/futisasoviwavi.pdfIn PDF document text
    • http://files.texasredtoypoodles.com/uploads/1/3/0/7/130775557/wominon-gawexij-migizurusamolel-ziburetewurejij.pdfIn PDF document text
    • http://files.mariacisnerostoth.com/uploads/1/3/0/8/130874065/7e43766.pdfIn PDF document text
    • http://files.fullcirclecounselling.com.au/uploads/1/3/2/6/132681826/gitujiroboker.pdfIn PDF document text
    • http://files.mirandatinaphotography.com/uploads/1/3/1/6/131636977/1db17f.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/1/0435/1302/0570/files/1584922786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/94965430881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1869/0458/files/78164564547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/68101463400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7182/files/97078294294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/77330792350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/classroom_management_plan_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5062/2358/files/ielts_writing_task_2_answer_sheet_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1415/2607/files/45146389933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1538/9855/files/funemad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/44372731568.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 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_off00007afb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFB 3756 bytes
SHA-256: 713a1dbcd2973384decfd7192745cf9549fa6a0207cbd37c0f32498224b600b7
font_01_sfnt_off00008843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8843 5892 bytes
SHA-256: 5d8d01f57556b3e455eb5859c448e16c2af1ee99d32b6fa03b7de7ccf0a6191d
font_02_sfnt_off00009bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BF1 10300 bytes
SHA-256: 5d09667589ab7b3825f61d622fecd46b4fe4555f59e3f20950a760d7de78fd9f

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