Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fec8a4552fc3195…

MALICIOUS

PDF

40.6 KB Created: 2020-08-25 20:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 438b64a7f483cbc2618075ade23ab34f SHA-1: 5dfad473d9407d55872606ae26a29b1184bf2e13 SHA-256: 7fec8a4552fc3195711f8e407236878f01b01a0a0d56eb848670e785bbd03a76
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to SEO redirectors, with the primary malicious redirector being https://ttraff.com/pify?keyword=legally+blonde+book. This suggests the document is part of a phishing or malware distribution campaign, masquerading as a free download. The ML classifier strongly supports the malicious nature of this PDF.

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=legally+blonde+book In PDF document text
    • http://files.achch.org/uploads/1/3/0/8/130874655/25a95a554ebcbb7.pdfIn PDF document text
    • http://files.madire.com/uploads/1/3/1/6/131606563/2923126.pdfIn PDF document text
    • http://gufopaz.ontariochristianchoir.com/uploads/1/3/1/3/131378779/9931189.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/1/0432/0018/4477/files/knowledge_smart_revit_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/beat_saber_size.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3761/4499/files/57061534254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/sexazibowetugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1028/5990/files/56100629648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/jibibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/factorio_solar_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/sozixefigutugewejerowabeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6145/1681/files/13241531028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6453/2900/files/14746301588.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/64781225597.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 1

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_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 4964 bytes
SHA-256: ba312505684f3311189d5ceb8ddc8e3105b7ecef1fea12b6be6e6d4cfb5f895a
font_01_sfnt_off0000735d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735D 10120 bytes
SHA-256: adfd61e595777a3d3dcfb468c1a5e4bdf4713b0a491fea0430ce0da6874701b4

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