Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56e10aff98189a2…

MALICIOUS

PDF

41.9 KB Created: 2020-08-03 11:36:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c61b0a4e9df9db54f64ae74c5978a7e SHA-1: 161607b36a3e96570d8f353a0d5985da74bc6d88 SHA-256: a56e10aff98189a2cdb0640dcd3f2f38ec686861910b4049fd3b712e0c628ca8
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'ttraff.ru', which is used in conjunction with the keyword 'caballo de troya pdf jj benitez'. Another critical heuristic indicates a PDF link farm, with many links pointing to Shopify-hosted PDFs. The primary malicious IOC is the redirector URL, which likely serves as the initial entry point for further malicious activity.

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=caballo+de+troya+pdf+jj+benitez In PDF document text
    • http://files.karenjrohrlach.com/uploads/1/3/1/4/131409508/f870c.pdfIn PDF document text
    • http://files.connallyband.com/uploads/1/3/1/8/131856381/koguwoxixude.pdfIn PDF document text
    • http://files.deefacepaint.com/uploads/1/3/1/8/131856134/sijenekuzo-kenos-vivam-sivumaxa.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/1/0429/7133/2767/files/karazawakuwujolowofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9970/0889/files/79922778010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/flask_of_oil_wow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9648/2727/files/git_force_pull_overwrite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1667/5740/files/lisipudedovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9878/3382/files/veragixoxalanegenijagive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/64666982490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/rimitemexanezipeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7668/8798/files/campbell_biology_10th_edition_test_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/pimegagarizeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70278744099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/gomozulajul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/vishnu_sahasranamam_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/pumodalipakalaz.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_off00006643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6643 5128 bytes
SHA-256: b589075b87f9e7514ff45ebff6b4e68fd330252aaac3fb19f875c9bbcf9d534a
font_01_sfnt_off000077d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 10240 bytes
SHA-256: be4aa581ea8025166d59957e4f0a04715d84a4d2d13c1180ea482b5f6f6251bf

Open this report in the interactive analyzer, or submit your own file for analysis.