Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc7a1dce39faa7a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-20 10:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f571d6a70cbe6b60f50c63bb59bea60 SHA-1: 2f99ba8c19335080cb8875bff5dde67df9c03efa SHA-256: 0dc7a1dce39faa7a271afbf0f0ba141f23c718c3cc6135d3ea4c8bc83b9d93a1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to attract traffic. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or malware distribution attempt.

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=monatomic+ions+nomenclature+worksheet+1 In PDF document text
    • http://files.datewithdestinee.com/uploads/1/3/1/4/131408432/4235396.pdfIn PDF document text
    • http://zodozafe.poppyandveil.com/uploads/1/3/1/6/131636725/1a830.pdfIn PDF document text
    • http://files.bayterracesadoptablock.com/uploads/1/3/1/3/131383889/8599472.pdfIn PDF document text
    • http://tokamo.allthingsmel.blog/uploads/1/3/0/8/130873791/natokefowuduru.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/1/0435/3431/9776/files/administrao_de_empresas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7797/3654/files/81482594079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/pudefatofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38743570217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9175/3115/files/2020_calendar_printable_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4201/1293/files/89831416576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/4289379052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/prefixes_and_suffixes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6837/5719/files/shl_situational_judgement_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/47848129742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/jadavuzetazepiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/sowosaturuf.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 2

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_off00006ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA7 5252 bytes
SHA-256: 242f7fde4b2d467dc2bb890f440f9b008196adeef3be9a762cc2eed3b4212f4e
font_01_sfnt_off00007e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 10164 bytes
SHA-256: 9de8bd84a03fbfa0cfb421162f4908c466f4de113219e32a229f9bd7adb8d27a

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