Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ade3ea0bb9de96…

MALICIOUS

PDF

40.0 KB Created: 2020-08-20 06:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0d6a62269eba5abcd4385511c29ff2b SHA-1: 809c70bf6acaf34949ce884024d150057afbe72c SHA-256: b9ade3ea0bb9de96122da8429b3e4546ee3ef48bc4c674ea3c77089e51188767
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service known for distributing malware. The document body and heuristics indicate a lure for free software, specifically 'auto tune 8 free vst', which is a common phishing tactic. The embedded links are designed to lead users to malicious or potentially unwanted content, leveraging a link farm strategy.

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.cc/pify?keyword=auto+tune+8+free++vst In PDF document text
    • http://files.keepafallenstar.com/uploads/1/3/0/9/130969889/6385142.pdfIn PDF document text
    • http://mavapedut.to-condo.ca/uploads/1/3/0/7/130775203/waxevokak.pdfIn PDF document text
    • http://files.createddesignsbytammy.com/uploads/1/3/0/7/130739535/6072901.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/1/0428/2076/3804/files/deneleguguboxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8062/3015/files/wexeladoginujidewitiwif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/stars_and_galaxies_note-_taking_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2475/files/vanozelolojigumodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/newsletter_template_in_word_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2122/1539/files/42953307712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4415/0165/files/wabiniposefif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/analysis_of_ordinal_categorical_data_2nd_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5965/9420/files/muwat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3619/5488/files/android_asset_studio_import_svg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1542/1599/files/tewopubipalavojeraj.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 4

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_off00005f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 4760 bytes
SHA-256: 21ccd9d1439ca0d7ee252719599972a3efcca8143497166e3b879f375fecdd56
font_01_sfnt_off00006f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F53 10536 bytes
SHA-256: 433256af4e9548d575b4675c0d7c4d3fe0097d3178bd77addc1ef051e4382b63

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