Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b06181b68fa1bff…

MALICIOUS

PDF

37.2 KB Created: 2020-08-22 00:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fac4df80c999592ed898b13684e325c SHA-1: b76d79d8abf14bcdfce997c915541f3f35db1220 SHA-256: 6b06181b68fa1bff64d1099f31af551c38478586f7391f1a8fe50ec2a1d1fb09
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 domain, identified as a redirector for SEO phishing. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a link farm or phishing lure. 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.ru/pify?keyword=uppercase+and+lowercase+letter+tracing+sheet In PDF document text
    • http://files.mishpuchacamping.org/uploads/1/3/0/9/130969525/litebakiromowilevuwo.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/1/0429/1959/2099/files/kidekikimarutevekexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/basic_networking_objective_type_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8220/2782/files/microsoft_access_database_templates_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/36483568180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/kinokaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/83432088954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0615/5173/files/introduction_to_astronomy_and_astrophysics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/gimp_save_as_png.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/pl_sql_interview_questions_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1068/files/lifetime_mission_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/mixulevogafisubured.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6373/6475/files/51966219906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/32935052595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/sample_neurological_assessment_report.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 3

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_off000052dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52DD 5420 bytes
SHA-256: 14c92835eadcf173692bc9d269342d1ddf2ed7d137766e98d3f92ec3addf2352
font_01_sfnt_off0000654e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 10096 bytes
SHA-256: 56917b300df36bf2747ec1eced49b82a5fc6d8d84e164658e4ffc786388bb385

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