Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f191d5e3a4b623…

MALICIOUS

PDF

48.2 KB Created: 2020-08-03 22:10:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6bc9e39ec0b5401f4703956133a4e674 SHA-1: 4a57554513bfb817190e5c030a96861420c46468 SHA-256: f6f191d5e3a4b623996998b946bfe7b01e083b2f88ab2ec25f971d78600382d4
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. One of the primary URLs, 'https://ttraff.com/pify?keyword=berg+balance+scale+rehab+measures+pdf', is identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to this redirector URL and numerous other Shopify-hosted PDF links, suggesting a coordinated effort to distribute potentially harmful content.

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=berg+balance+scale+rehab+measures+pdf In PDF document text
    • http://files.laurasprinkle.net/uploads/1/3/2/6/132682758/5422519.pdfIn PDF document text
    • http://files.boxboardstheatre.com/uploads/1/3/1/3/131383478/2274803.pdfIn PDF document text
    • http://files.bikewritingbuilder.com/uploads/1/3/0/8/130874067/5dd82b.pdfIn PDF document text
    • http://files.umityalcinalp.com/uploads/1/3/1/6/131637701/ruvapanegagajuwiw.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/1/0435/9910/2110/files/41502356733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/somewhere_safe_with_somebody_good.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/volepigirolon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4249/5899/files/if_else_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/14827652311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/65339239930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/vesudorikulirorujate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3859/6511/files/96809769103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/41015473030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/lafuvibilavizut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/suteso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/71369182861.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_off00007ce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE3 5760 bytes
SHA-256: f4fe2ae14e16bc6d8a7214d9763fb8b2899b31b099314cf826f3ff2a2fc6bc3d
font_01_sfnt_off00009049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9049 10404 bytes
SHA-256: ad4cfad54c041618127b70c50b1a4ea9ba69b1f22e72f008d1eaa99a5f4c64c3

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