Malicious PDF — malware analysis report

Static analysis result for SHA-256 66db8102f726543a…

MALICIOUS

PDF

77.9 KB Created: 2020-08-21 13:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83c902f70d719de0c0ee97c821df03ec SHA-1: 8d1a8a95990468914092dd17c648b344deb7cae6 SHA-256: 66db8102f726543a69a4d793f37e12d9bbe089243e026f118d22f4f925d55b7e
162 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that appears to be part of a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=roblox++chromebook+os, suggesting a lure related to 'Roblox chromebook os'. The presence of multiple PDF links and the redirector indicates an attempt to lead users to potentially malicious content or further stages of an attack.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=roblox++chromebook+os In PDF document text
    • http://degap.masonmansungkang.com/uploads/1/3/0/8/130813604/cfa4e8819a179.pdfIn PDF document text
    • http://files.artistoday.com/uploads/1/3/1/3/131383325/901d080415.pdfIn PDF document text
    • http://zawonis.jamilamikhail.com/uploads/1/3/1/4/131482962/kubusisex.pdfIn PDF document text
    • http://files.nostrings.co.nz/uploads/1/3/0/8/130874382/xemuvag_kumedo.pdfIn PDF document text
    • http://files.dingerdivesin.com/uploads/1/3/1/8/131859261/b1ca063f.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/1/0434/0806/4677/files/devuxigiribizit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruketisoren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/rsa_python_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/rookie_blue_episodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6133/0591/files/sewifewulegirivadiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43545787384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/garuvekekubipumixakirami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3332/7776/files/16096498158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/58260591889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9888/0680/files/81906974847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/10309320334.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 5

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_off0000f41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41D 5108 bytes
SHA-256: 44cef36c380d7f02286eb9d71a0ab867917192df21d7799606930e55a5b9d6eb
font_01_sfnt_off0001055d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055D 10972 bytes
SHA-256: 191a78ad90e1933943d7d6cb68600250f88c006ab99584423a608656b1dce37f

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