Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4cfefa6918cd8a…

MALICIOUS

PDF

40.4 KB Created: 2020-08-20 06:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9f3b6eac1494427942028767bdff479 SHA-1: 06ac10d656024c5a9450f3c631f78af1617bba9c SHA-256: 9f4cfefa6918cd8a433ff1d6e77a2c0e57fe942fde910dc2c57e4fae1003343b
194 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a malicious redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. Another heuristic noted a large number of external PDF links, many hosted on Shopify, which is characteristic of SEO manipulation or link farms designed to drive traffic to potentially malicious destinations. No scripts were extracted, but the extensive link farm and the identified malicious redirector strongly indicate a malicious intent to lure users to external resources.

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=smooth+4+gimbal+manual In PDF document text
    • http://files.thesoundspace.net/uploads/1/3/0/8/130874543/5495136.pdfIn PDF document text
    • http://fekaxilu.mccoymultimediallc.com/uploads/1/3/0/7/130739573/vadabofew_sidanase.pdfIn PDF document text
    • http://files.drkayecase.com/uploads/1/3/2/7/132740905/9790658.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/1/0433/6245/1611/files/2014_jeep_patriot_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/zofuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6718/7108/files/multiplication_word_problems_worksheets_3rd_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/sinenaduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/94898788797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/cancionero_catolico_partituras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/xibotaxevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2441/4882/files/kudafik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/86314198031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/takipiwupovat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/kavinudirejobewamamutux.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_off00006138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6138 5156 bytes
SHA-256: 385de3d98fac7e53b1e8c17d794f88278d73be49d3c6ed487e64c3a2828dc024
font_01_sfnt_off000072a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A6 10068 bytes
SHA-256: f56191f4f8c3d4ed4b7ac412760360f94cc6792deec712d1020852c427511b4e

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