Malicious PDF — malware analysis report

Static analysis result for SHA-256 c21d077c6f04e178…

MALICIOUS

PDF

38.8 KB Created: 2020-08-20 05:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5df5b64d2130793a65ab5ca818f9bdc1 SHA-1: 00c003db308071e517589767e57a1883dc05f277 SHA-256: c21d077c6f04e178de520f4a4927b792fa1bb25dcd3cab07749617630658d7f1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=o+balma+odia+song+ringtone. The document body itself is heavily obfuscated but contains references to this URL and other Shopify-hosted PDFs, suggesting a lure to download further content or be redirected to malicious 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=o+balma+odia+song+ringtone In PDF document text
    • http://files.gemscene.com/uploads/1/3/2/7/132712333/5866538.pdfIn PDF document text
    • http://files.wivco.com/uploads/1/3/0/7/130738597/vosujufesa-nodaneg.pdfIn PDF document text
    • http://sexomu.coachingbytheballs.com/uploads/1/3/0/7/130738950/renabumewevif.pdfIn PDF document text
    • http://jorosef.anti-agingbyrjxjelly.com/uploads/1/3/2/3/132303354/8686563.pdfIn PDF document text
    • http://gekuk.southerncommunitystudy.org/uploads/1/3/0/7/130739206/xatebesopa-mokosipireje-pilemom-junerosenof.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/1/0431/6590/9160/files/understanding_comics_chapter_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/opera_sports_news_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/free_download_islamic_books_urdu_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/html_to_angular.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/56222408410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3179/5624/files/36432276277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/xukelipalafurusutaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/mosemugimekapawofab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6249/3345/files/rusuvuzutokusodabugabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/tupomorekaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/60848990854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000583f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x583F 5312 bytes
SHA-256: b2c4d02bf525403ecbdaadae16ff234b99d9594a97338aef16f26dacd42810ff
font_01_sfnt_off00006a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A30 10600 bytes
SHA-256: c151c037bf8cb6b86261009382261b7f0fbaf90ef0c5ff20cd0f64214bdf970b

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