Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b8b1d7cc05d0f6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-16 19:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a445619f88c9a7abc2a2a1f80405707a SHA-1: 4faa135908ea9a8b9d20d0e783f893d866bee2a5 SHA-256: a0b8b1d7cc05d0f6cc8c3c55014a810be75ece26b083dc9c23baa6d7d2ee28d5
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic, which is part of a link farm designed to attract search engine traffic. The document body, though heavily obfuscated, contains the string 'Chronicles of riddick full movie' and the malicious redirector URL, indicating a lure for users seeking content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.

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=chronicles+of+riddick+full+movie In PDF document text
    • http://files.lionscb.org/uploads/1/3/0/9/130969305/180a4a1ad.pdfIn PDF document text
    • http://datij.orientation.fis.hk/uploads/1/3/1/4/131482962/04f237.pdfIn PDF document text
    • http://files.hcaphoenix.com/uploads/1/3/1/3/131398250/mopuzelujol.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/1/0436/1509/2893/files/nujujanimewigofixiwowat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/vugafodametasusitakodeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/ugly_s_electrical_reference.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/pavagusarugepuzavezuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/66374360261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0938/4345/files/sepaneroketaxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/89928353208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0714/files/6399103741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/hong_kong_monthly_weather_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/norfork_lake_fishing_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/67959356419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/5827/8050/files/25161314780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4800/0922/files/subwoofer_amplifier_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/converter_to_word_download_free_for_windows_7.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_off00006c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 5080 bytes
SHA-256: 50ec195801333a0b688d288c5a6f5c3d102a013db372e15afedd10b043878dbc
font_01_sfnt_off00007d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D46 10316 bytes
SHA-256: 287ceab9cd784707dfb46869570cfa73bf26cfd22d43f9c48b7f73c17edf0f4b

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