Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec85db475d78458…

MALICIOUS

PDF

49.6 KB Created: 2020-08-19 13:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49842f10fdda1b777dfdc24dd8e8113f SHA-1: 9a5841bc6dec543ffe6683d18ff34747a37d8b49 SHA-256: 4ec85db475d78458a66df096aaacec3b51e7ba5f038379560707d171df6686b1
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a keyword suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify, likely to distribute the malicious payload or for SEO manipulation. The primary attack vector appears to be social engineering via a deceptive link.

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.com/pify?keyword=breadcrumb+trail+app+android In PDF document text
    • http://files.spamitzvah.com/uploads/1/3/1/3/131384789/2268709.pdfIn PDF document text
    • http://gikizeb.naturalbirthingjoy.com/uploads/1/3/2/6/132681513/zowebalufujiz.pdfIn PDF document text
    • http://laxugij.paulinepetsel.com/uploads/1/3/1/4/131438500/widada_turevumakase.pdfIn PDF document text
    • http://sirisojux.madisoncountycc.com/uploads/1/3/1/4/131437792/notowa.pdfIn PDF document text
    • http://files.charlenegroome.com/uploads/1/3/1/4/131410299/pejubuko_nufaf_matew.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/1/0433/0687/7080/files/bivunamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/44614226474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/9510/0311/files/medical_certificate_form_42.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/55347000841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/xunuxasakuxelerovipazara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0911/2226/files/83040519040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/77859812956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1331/5480/files/tebuziduke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/tom_cruise_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/10796470905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5520/0918/files/vidupovevuvoduxilagexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6706/4998/files/vapawixaditivilalewomexew.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_off00008371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8371 5232 bytes
SHA-256: 7b123a4d55284e71e9a418f474dccb26b9fe85561876323e577e5ed943baed58
font_01_sfnt_off00009512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9512 10544 bytes
SHA-256: 80029946f786e5e8006450d4e5d6735a7d88b257553e3d23d4576725fb520f22

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