Malicious PDF — malware analysis report

Static analysis result for SHA-256 b42bf26cb4502442…

MALICIOUS

PDF

38.5 KB Created: 2020-09-17 12:56:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cecd823d4200501b87d29df443d461f1 SHA-1: 029d1a8ab5a4ad108ecee6639434a4f0b4635cd6 SHA-256: b42bf26cb450244290c0ed7d483457ec6d2a9888a86f1047b40bdc84ee5c097e
194 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which point to redirector infrastructure and SEO link farms, indicating a phishing or malicious redirection attempt. The document's content and embedded links suggest it is designed to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of malicious links is a strong indicator 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.me/wix?keyword=advance+teacher+rating+system In PDF document text
    • http://voxexed.goodatlooking.com/uploads/1/3/1/4/131407226/lumumere.pdfIn PDF document text
    • http://dilokup.coastalcaringclowns.com/uploads/1/3/1/4/131408172/158680.pdfIn PDF document text
    • http://lerikubos.kcga4u.com/uploads/1/3/1/6/131636698/zuwig_buvaxolo_tisejudepibose_gujowerobi.pdfIn PDF document text
    • http://zibujen.lakeodessaarts.com/uploads/1/3/1/4/131454215/tosivepekivo.pdfIn PDF document text
    • http://divode.teacherlounge.org/uploads/1/3/0/7/130738667/975ed05b.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://a1bc42b2-6d86-456b-9623-a00ad7805edb.filesusr.com/ugd/f08e01_7ec4d03de11e4a60ba401b0d66244bcb.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/57195547659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/80397712380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7143/7984/files/julius_caesar_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2039/files/13913451724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/74310529479.pdfIn PDF document text
    • https://147b0c94-c00b-453c-9d62-d5dced61b888.filesusr.com/ugd/154db6_f00fe5d4ca4a4ccb86b34727477c3f89.pdf?index=trueIn PDF document text
    • https://23d0a6c2-9f37-4951-9e44-0814be2deb06.filesusr.com/ugd/ad2ade_1940efd99cff4a908fc6d3add5e00cda.pdf?index=trueIn PDF document text
    • https://88c84fde-874b-47a2-8e10-d11ee69baca5.filesusr.com/ugd/28146e_a66babaf9c954508a4d59b75b967e420.pdf?index=trueIn 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_off00004c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C2A 5148 bytes
SHA-256: 5f343398f8a851d2d5c9eed5d48cd3f5fc6b1c7cb30f568d024e972fdeb24044
font_01_sfnt_off00005d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D7B 9952 bytes
SHA-256: 79a021ee6c93f07585c84072375e0a76956869545c24c164c201358550a050ae
font_02_sfnt_off00007f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F33 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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