Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad58c9f0841f68b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-22 04:57:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0ddbe87e4d460f4d9f3e5b5c5b459a77 SHA-1: a1ada30af3a8b2abbaa61f7ee8030e7c99ecb241 SHA-256: 6ad58c9f0841f68b4a888e7a99dddd88d04a831a3e761161a3b970a05dc72fd8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirectors and SEO link farms, designed to trick users into downloading further malicious content. The ML classifier strongly indicated maliciousness, and the presence of a known malicious redirector URL reinforces this assessment. The document body, though heavily obfuscated, contains references to the redirector URL and benign-looking PDF links, suggesting a lure.

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=android+animated+svg+view In PDF document text
    • http://padurotut.incubator143.org/uploads/1/3/1/3/131379394/4068087.pdfIn PDF document text
    • http://files.jayepstein.org/uploads/1/3/2/3/132302871/a4d609572.pdfIn PDF document text
    • http://kuzewel.tacticalmitigation.com/uploads/1/3/1/3/131383708/viwemez.pdfIn PDF document text
    • http://files.287ranchsupply.com/uploads/1/3/0/7/130776142/lajogewapev.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/1/0434/1664/9890/files/prime_time_6th_grade_math_book_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0010/3071/files/32821613595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/mirodot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/72232117786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0056/9766/files/mitosis_and_meiosis_color_by_number_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1851/8681/files/titamazapadinujet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/fun_general_knowledge_quiz_2018_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5733/2895/files/decomposition_of_cellulose_by_microorganisms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5784/files/asus_rtn66u_firmware.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 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_off00005440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5440 5256 bytes
SHA-256: 171b51f8d9f21fa7fde50af8d1a67deb335ee8514392656f4a374d8eeac791a4
font_01_sfnt_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 14068 bytes
SHA-256: 5dde79e3236d7fbcab5e4ba3f34d431334cc1f0fb702524fb4f6d5338e77d571

Open this report in the interactive analyzer, or submit your own file for analysis.