Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b50258b06de70dd…

MALICIOUS

PDF

34.7 KB Created: 2020-08-13 14:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ae30d2a630b0d844eb9fc24fbda8f19 SHA-1: cf50dc3a9f9c067cc05731da299654452504ec4b SHA-256: 7b50258b06de70dda920da207187d736116129a2da3abe24d69ddf85b0516da9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that appears to be part of an SEO link farm for phishing. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=algebra+2+prentice+hall+mathematics+pdf, suggesting a lure for free content. The presence of multiple embedded URLs and the ML classifier's high confidence score indicate 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/pify?keyword=algebra+2+prentice+hall+mathematics+pdf In PDF document text
    • http://files.juliawebberforeanes.com/uploads/1/3/2/7/132740606/0d19cc1.pdfIn PDF document text
    • http://files.gilfordphysicaltherapy.com/uploads/1/3/2/6/132683334/5158343.pdfIn PDF document text
    • http://files.hameeha.com/uploads/1/3/1/0/131069899/pitabevag-gixoxafubutujux.pdfIn PDF document text
    • http://zerabutud.pinecrestplayers.com/uploads/1/3/1/8/131855981/ea3c714ac1d.pdfIn PDF document text
    • http://files.ctforkids.com/uploads/1/3/0/7/130739898/3443226.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/1/0436/2859/3315/files/87669653387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4117/7252/files/83838506796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4035/6005/files/15844542217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/92788930365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/jiweridasofidisiwala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8022/0823/files/allan_kardec_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/1018/9480/files/speaking_worksheets_for_esl_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/align_image_center.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2623/4009/files/43261410145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/69611660379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/pulmonary_complications_after_cardiac_surgery.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/kuwefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0817/8850/files/playhouse_instructions.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 7

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_off000048d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48D6 5828 bytes
SHA-256: a022e4347caa73e5fad74356eb2cff466ae708dc2a51bd151bf376b18a55d519
font_01_sfnt_off00005c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C75 9708 bytes
SHA-256: 93c68e9e444777b8ca75ce7a8a42e72e6e2feb4dbe44b52c7d06d133df603090

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