Malicious PDF — malware analysis report

Static analysis result for SHA-256 6133cc7b19737b2e…

MALICIOUS

PDF

52.7 KB Created: 2020-08-14 15:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2a4f27f49854216e4fff1f2615052ec6 SHA-1: bfda3cd8477d664a6e3d66c49183df17675dc5f3 SHA-256: 6133cc7b19737b2ee6fb2d87385625b8abc553e071336d601d1973e3c067463b
194 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious redirector links and a link farm, suggesting it's part of an SEO phishing campaign. The primary malicious URL identified is https://ttraff.ru/pify?keyword=fcra+investigative+consumer+report+authorization, which is used to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to the redirector URL, reinforcing its role in a phishing attempt.

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=fcra+investigative+consumer+report+authorization In PDF document text
    • http://files.xcelrc.com/uploads/1/3/2/7/132740204/sajamerumora-liperinoxudaz.pdfIn PDF document text
    • http://files.ekosingers.com/uploads/1/3/0/7/130776462/zulimu_diponupal_jawapanebogiga_nodiremiw.pdfIn PDF document text
    • http://tozibunov.sd67internationalprogram.com/uploads/1/3/1/4/131407089/3476687.pdfIn PDF document text
    • http://files.oberonmassage.com/uploads/1/3/0/9/130969572/b71ba.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/1/0429/1824/8601/files/pebewovifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/15427197541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2986/3320/files/tedojobamosaxijikuvidijuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7678/files/pileneseligo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxasukazojolivuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/furoposefadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/felog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/ruvagerevefabotegut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4642/files/55549352546.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_off0000919a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x919A 5380 bytes
SHA-256: a616aba39ce63b1a11117ee3f869a322b9c34feb9f65673d09217aaa6b6bf97c
font_01_sfnt_off0000a3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CD 9912 bytes
SHA-256: f9cfdb3281cc1aded4498e0f07c184122e54b56989dd9424f7ff0c2abfba0945

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