Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f3819e2fde6582…

MALICIOUS

PDF

101.5 KB Created: 2020-08-22 17:54:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb235fc3758fc4ea6c7254cfdd328f07 SHA-1: 20219d65a1797a7d37932a55fba3e97c8c8320ba SHA-256: 79f3819e2fde6582912a6d31fac9a689161567ebd572fc16527f8f9b525958c8
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing attempt. The primary malicious link identified is 'https://ttraff.ru/pify?keyword=acquisitions+incorporated+5e+pdf+free', which is likely used to distribute further malicious content or phish for credentials. The ML classifier strongly supports the malicious nature of this PDF.

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=acquisitions+incorporated+5e+pdf+free In PDF document text
    • http://ravasari.thejuanonjuanpodcast.com/uploads/1/3/0/8/130874153/3822960.pdfIn PDF document text
    • http://vufojot.illica.com/uploads/1/3/0/9/130969634/mibugunoxew-metiwisujuburug-zorolokanet-zuvedawenopor.pdfIn PDF document text
    • http://files.digitalxraypros.com/uploads/1/3/0/7/130739578/c6937752684b210.pdfIn PDF document text
    • http://files.uptonemporium.com/uploads/1/3/1/4/131437671/burizula.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/1/0446/6681/4617/files/degree_of_comparison_of_adverbs_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8850/3203/files/56236700619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/animal_crossing_rainy_day_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/17918005925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/81005439866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0902/files/18961351954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/tomcat_users_xml.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/34896076814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/57926222344.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 7

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_off00014a6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A6B 5356 bytes
SHA-256: 770b601593a8aa0fcae3f796a94085b70ea33821196b4df688b469de44a0d304
font_01_sfnt_off00015caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CAA 14432 bytes
SHA-256: 525acf936d70c1a6abf04f279e93219beae0d759323a0386cb0e84d6357bffe5

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