Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8df760af70c3a0…

MALICIOUS

PDF

38.7 KB Created: 2020-08-17 05:47:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2c0eeb768577001e8061dcc1c475a34f SHA-1: ccf04d49d0a6b965e9c260c3bdf07a074ae74b31 SHA-256: 5f8df760af70c3a0ad8928ceab64d9afd9d42110519c34e2821d9e912ffa9f51
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the primary redirector URL and several other URLs hosted on Shopify and other domains, suggesting a link farm or phishing lure. The ML classifier also strongly indicated maliciousness.

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=sheetrock+dust+control+joint+compound+review In PDF document text
    • http://files.rykersonforkittery.org/uploads/1/3/0/7/130739742/fokapofeje.pdfIn PDF document text
    • http://files.alexandertechniqueforviolinists.com/uploads/1/3/1/4/131438175/muzijasame.pdfIn PDF document text
    • http://files.therestthatworks.com/uploads/1/3/1/3/131379650/1626549.pdfIn PDF document text
    • http://files.simplychicbynikki.com/uploads/1/3/0/7/130775970/95bf44.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/1/0434/7042/2180/files/67182271515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6915/2159/files/farujowaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4828/8934/files/20291416485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0327/3628/files/kikigele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/85528177344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/rusadofifexowomafalis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/nefoxijekupexen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5446/5175/files/erosive_gastritis_treatment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/kolamerusevomezoxijarip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3102/6071/files/kukotulelivobana.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
🗂 Part of campaign: rykersonforkittery.org 6 samples

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_off000057fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57FB 5500 bytes
SHA-256: eccd3abfb6705dad85fe80d187935155395f91fd243e406ac1e30972d07c9568
font_01_sfnt_off00006a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 10320 bytes
SHA-256: 79dbbadc1e4e9f34264018c4dbc7255df7c12c0e5fafe7cff2e632cf9573eee0

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