Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f6f684baf370531…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 23:46:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f5b431a83c0990ed14e7c1c86920d74 SHA-1: 2adce1440d570f5ba055d037d898dc6bc0886733 SHA-256: 6f6f684baf3705310aac8aa5d1e82722976c8769bb2fa73e5fef6942a8c654bb
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that appears to be a lure for educational material, likely intended to trick users into clicking through to malicious content. The ML classifier strongly indicates 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.cc/pify?keyword=multiplying+mixed+fractions+worksheet+6th+grade In PDF document text
    • http://tegotuxin.martinezria.com/uploads/1/3/2/7/132740328/vataronozibulalomef.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/1/0431/8583/2096/files/79832625402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/bosejafogajoxuwule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3020/8924/files/scrivener_templates_fiction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7993/3862/files/gebopamigijukijadazubuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0046/files/garageband_11_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1281/5008/files/nisobodapakevit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5420/2018/files/65222570340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6821/8780/files/14797508678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/65893346599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1174/3639/files/59664975560.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_off00006699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6699 6056 bytes
SHA-256: 4a2bf893092c5a3cf02459bdfe75fb48c345ced0d2560786ca70b7b1eeb7bf37
font_01_sfnt_off00007b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2E 10080 bytes
SHA-256: ce960315de345fa8dc11614532c973023eb5e632c3b79136cb7040dbd5d35a62

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