Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ff76a6a7111d0b…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 08:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ed07f2c27931015df46eb71a2725594 SHA-1: abef9143d021ccd8c508d8e2757fbdf04f8c1376 SHA-256: f5ff76a6a7111d0bf30f49776de7d2e33b716d24fbce59eb2cbe890b6347eb18
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=simply+keto+cookbook+pdf'. This link is presented within the document body, disguised as a cookbook PDF, to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious destination. 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.com/pify?keyword=simply+keto+cookbook+pdf In PDF document text
    • http://files.purduedphil.com/uploads/1/3/2/6/132682585/1893050.pdfIn PDF document text
    • http://files.ihmcenterforliteracy.com/uploads/1/3/1/3/131380786/4941664.pdfIn PDF document text
    • http://jipepode.eogandcysyoga.com/uploads/1/3/0/7/130776326/gusewanagizevomod.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/1/0440/3865/2069/files/rangitaranga_full_movie_with_english_subtitles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4177/8838/files/advanced_calculus_for_applications_hildebrand.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/finanapejomogumibabinut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/41206421032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/1760231346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4265/6671/files/ap_calculus_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/77262708933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8458/files/27040543120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/algorithm_program.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 4

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_off00006c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0C 5224 bytes
SHA-256: d6a959d9a148c4f36a38befa522c4673593f40d0723aefc4e41a2166918dbcd7
font_01_sfnt_off00007dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 10752 bytes
SHA-256: d26ce4b6d3d27e8a81ccaaf16279ea88e580bb0a242f4ecbfc2be8b4a8f65253

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