Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb103ac48b25f729…

MALICIOUS

PDF

32.3 KB Created: 2020-08-09 15:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 881dcefe4e260afb5625c3e36ae6214d SHA-1: 6057251711905ec159f179632662f93fbd313c1e SHA-256: eb103ac48b25f7299ecd1e9a275d62e09eb4286f35c37c09c86a4978b5d67107
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.cc/pify?keyword=hinario+vo+corrente+pdf, which likely serves as a gateway to further malicious activity. No scripts were extracted from this sample.

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.cc/pify?keyword=hinario+vo+corrente+pdf In PDF document text
    • http://files.mixedadventures.co/uploads/1/3/1/4/131437335/9294005.pdfIn PDF document text
    • http://files.foliagewoodcarving.com/uploads/1/3/1/4/131454670/birekexujijugaz.pdfIn PDF document text
    • http://files.lexcoffeecottage.com/uploads/1/3/1/1/131163684/9087941.pdfIn PDF document text
    • http://files.johannakeehn.com/uploads/1/3/0/9/130969298/941302.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/1/0430/9798/1082/files/nizololokomuvotomunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/gosotanivep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/95025610502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43106273748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/739692357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0675/4970/files/sujet_brevet_franais_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9795/6258/files/30719032844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1379/9064/files/ragojavoludosava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/sajibilanexizu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/jizewifevewe.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 6

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_off000042e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42E3 4960 bytes
SHA-256: 78a931466b28d253b2988af329a7e70fd4530631128aa51a14cda90fd367d373
font_01_sfnt_off000053e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E0 9652 bytes
SHA-256: f04a4084af3de72b622ea6616eea2376ad0989df3c85c9d498079101a3b90425

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