Malicious PDF — malware analysis report

Static analysis result for SHA-256 1606fdf5737a4653…

MALICIOUS

PDF

63.8 KB Created: 2020-07-31 15:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b41459602d628a927df0ee87b4fdab0 SHA-1: ccc9834ad51777014d2e3702179c27f4b5375e9e SHA-256: 1606fdf5737a46532027c0ef462d235cd77c0462a2ee1686d9c62bd16a887e41
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, many of which are hosted on Shopify and appear to be part of an SEO link farm. One critical heuristic indicates that embedded links point to a known malicious redirector, ttraff.com, which is likely used to funnel victims to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=cantico+delle+creature+spartito+pdf In PDF document text
    • http://files.salvagejunky.com/uploads/1/3/0/7/130775784/396451.pdfIn PDF document text
    • http://files.handmaidsoftheheartofjesus.com/uploads/1/3/0/7/130739180/kovinawuvul-nobulemodixar-mojimilosaparof-mezuxeva.pdfIn PDF document text
    • http://files.sportchatteris.com/uploads/1/3/0/9/130969364/6822981.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/90067119925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/darezoxizexarofisapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/xerovuratumapikimukopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/99710580469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3464/6440/files/2645350394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/jabukipiraliroxaxuvevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/27383888155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0431/files/webakepuxisimusukufibemov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/dijisunoxofugovunulavep.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 1

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_off0000bca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCA2 5052 bytes
SHA-256: bf34230b23c1baf83dee3e90cebcf05d6a1c4d1969cf5c850c3e8cc53ab2c45b
font_01_sfnt_off0000cdd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD9 11116 bytes
SHA-256: 18b26d385ba79d066ca41eb89e707f9edb9319d8b0f06881e4ffbb3498944c40

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