Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ae29b4269b0894…

MALICIOUS

PDF

36.6 KB Created: 2020-08-16 12:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0f110cf0b77c8f736e819256225a1aa SHA-1: 0b35404224331669169380d7072b0df9e2334004 SHA-256: 08ae29b4269b08941268a18cd09068c9b5a01fafdf541af7650a04763d5ef741
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector pointing to a site offering a "convert online pdf to word ocr" tool. This is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure suggests it's part of a link farm designed for SEO manipulation to attract victims. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/wb?keyword=convert%20online%20pdf%20to%20word%20ocr In PDF document text
    • http://files.hudsonfoodcollective.com/uploads/1/3/2/7/132710704/gotaxikuki.pdfIn PDF document text
    • http://files.healthexinternational.org/uploads/1/3/0/7/130738881/rowuza-gasefoluka-bexozurelu.pdfIn PDF document text
    • http://files.twoshade.com/uploads/1/3/1/3/131384777/6180219.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/1/0434/1537/1932/files/92358775067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0718/0954/files/79323594470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4611/3173/files/cfa_level_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/86200825543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4101/2382/files/rizig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8848/5288/files/up_up_and_away_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/cobra_mag_id_unturend.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_off00005288.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5288 4816 bytes
SHA-256: a0e7492b9df0e42c6afced744bb172bef72dd4e800ffdeec396678cd5a314575
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 10192 bytes
SHA-256: b0d2143dd473ade222a8d1c82f11224326cd593b5756a48fe7efbaf1aae26563

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