Malicious PDF — malware analysis report

Static analysis result for SHA-256 64aef62145a24f19…

MALICIOUS

PDF

40.7 KB Created: 2020-08-18 22:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: edd344b20581f420d662780dce5b8d60 SHA-1: ab9fa2aec33cd307c60de2b7ec497f3b03e08820 SHA-256: 64aef62145a24f1986da877e021c68adf78e4908a4be35aa376dbfbfab3c440f
194 Risk Score

Malware Insights

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

This PDF document contains multiple embedded links that redirect to a malicious domain, identified as a redirector. The document body, though obfuscated, contains a URL that points to the malicious redirector. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. 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=oxidation+reduction+titrations+pre+lab+answers In PDF document text
    • http://files.i4ingenuity.co.uk/uploads/1/3/0/7/130739015/pajirafuzufa.pdfIn PDF document text
    • http://files.goldenorchidphotography.org/uploads/1/3/1/3/131381675/jaburit.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/1/0434/1936/9639/files/bebazetibuvubafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/bibbulmun_track_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2725/0848/files/99480787465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7528/8742/files/7th_grade_go_math_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7044/9816/files/mathematics_for_economists_simon_blume_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/datufezon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8506/1541/files/gebetewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9628/4062/files/cabinet_ministers_of_botswana_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/scrum_master_resumes.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_off00005e81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E81 5396 bytes
SHA-256: 70dcea5a1cdf15eebedc1e71834526412769eae4b2a7d99536d2fd6631545c5d
font_01_sfnt_off000070f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F4 10372 bytes
SHA-256: 9d52e27dbf44ba41fca57d046a42d30c55809e4baf09bdccff30f1cd2fdcc9f2

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