Malicious PDF — malware analysis report

Static analysis result for SHA-256 016feee6f9b7d2b4…

MALICIOUS

PDF

39.4 KB Created: 2020-08-19 00:20:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9680b20d5a9e501e9fc5ef7503711542 SHA-1: fe6966e75ecfb951d82d6b4571b22e398142e4fe SHA-256: 016feee6f9b7d2b43763ea582af24493ee772d13756938087aea189e0bdb2da9
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, identified as a redirector for SEO link farms. The document body, though heavily obfuscated, contains a URL that appears to be the initial lure. The ML classifier strongly indicates maliciousness, and the heuristics point to a phishing attempt disguised as a datasheet download.

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.ru/pify?keyword=polycom+hdx+4500+datasheet In PDF document text
    • http://files.behindthebars.org/uploads/1/3/0/7/130739258/puzikev-gojodekuxes-rogafodavas.pdfIn PDF document text
    • http://files.littlelotuscafe.com/uploads/1/3/0/7/130740617/jotusib.pdfIn PDF document text
    • http://files.nordicwalkinglondon.com/uploads/1/3/1/4/131437806/zaguk-dimebefir-nivekurixiwo.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/1/0440/7223/9269/files/24682026835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/wipesogivomodiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/verbal_ability_and_reading_comprehension_by_ajay_singh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/87597212780.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2263/6440/files/illegal_pill_identifier_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/human_sectional_anatomy_ellis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/waxelabimukamisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/21565031501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/game_of_thrones_minecraft_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/sinos.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: cluesescaperoom.com 5 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_off00005932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5932 5608 bytes
SHA-256: fb2469f4c58e61587ce5b7bc29045edb5689e910210b6de9d8d8a15c20de576c
font_01_sfnt_off00006c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C35 10792 bytes
SHA-256: 435bd1e46966e8bf9d5b71dd908d353d401ae5d0aadc9f818987ddc37f80ce2d

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