Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b67bfd1ed15632…

MALICIOUS

PDF

56.0 KB Created: 2020-08-21 21:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd0e06fc04fc85f79dc44d382daf1e31 SHA-1: dc28acf0587d9d0f6e32c522c9c9d474b28f3afa SHA-256: b5b67bfd1ed156329ae58d17a1f88bb9517c7c7d2161e3d81d71183de51c686b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised with a lure of "boy scout uniform images". The ML classifier strongly indicates maliciousness, and the presence of numerous embedded links to external PDFs, many hosted on potentially suspicious domains, further supports this. The primary malicious IOC is the redirector URL, which likely leads to further stages of infection.

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=boy+scout+uniform+images In PDF document text
    • http://zebetovam.bluebeatsmentalhealth.com/uploads/1/3/0/7/130776225/wipevugido.pdfIn PDF document text
    • http://goleji.annawitte.org/uploads/1/3/0/7/130776367/48aa61.pdfIn PDF document text
    • http://files.jdjohnsonhorn.com/uploads/1/3/0/7/130738675/nunimekowewa-luxutiwavak.pdfIn PDF document text
    • http://files.snugharbormarina.com/uploads/1/3/1/4/131438111/6755061.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/43636111495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/jazujusivuriwupadizilute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/tovemokazovajegedupage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5349/9046/files/68658522521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65294746239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6050/2421/files/zigababafixoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/meraforawofem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/paula_bruice_organic_chemistry_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/serebixikati.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008e0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0B 5200 bytes
SHA-256: 22ba3b2e1c107da87bd6fc585f404b93b0ed7ea33b8f2f20889ee03bf125b242
font_01_sfnt_off00009fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FA5 10852 bytes
SHA-256: f844f31f284229bbd438442853195f67ea7884cedf19bafcc00d1d6a44071a04
font_02_sfnt_off0000c4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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