Malicious PDF — malware analysis report

Static analysis result for SHA-256 752dd0adaf303808…

MALICIOUS

PDF

33.7 KB Created: 2020-08-11 04:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9b9e85e1b6fb2836d2034dd4e487fcb SHA-1: 9167c29c54d80b938ff79b6db8ebac9c7fa4bed5 SHA-256: 752dd0adaf303808ad83a0693740358bd20347ae3aad8137282b141581679ed3
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, suggesting a link farm or phishing lure. The presence of a malicious redirector URL and the ML classifier's high confidence indicate malicious intent. The document body, though heavily obfuscated, contains the malicious redirector URL, reinforcing the finding that the file is designed to redirect users to potentially harmful content.

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=candlestick+patterns+pdf+sinhala In PDF document text
    • http://files.wkuprecollegepiano.com/uploads/1/3/0/7/130739508/xapula.pdfIn PDF document text
    • http://files.shrubmadness.com/uploads/1/3/0/7/130775561/kefez.pdfIn PDF document text
    • http://bivewonek.madridistasatl.com/uploads/1/3/1/8/131871991/kuwuk-jisugibafuvuni-furuwutif-muzanubi.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/1/0435/4077/5064/files/form_130_u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0822/0574/files/42164211391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5462/0054/files/crandon_park_beach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/6627938419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8711/files/44241682422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/sijumak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9565/8389/files/degusutaxetajapul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/75905164962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5417/7185/files/bagiwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1478/1085/files/adobe_packages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5828/9045/files/berliner_platz_1_neu_lsungen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/8683/4851/files/86768931021.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A5 5212 bytes
SHA-256: f1c5e7eb4da799336b1cc199d3a0eb783c810148b72b7efbbb45caaa8f5b3824
font_01_sfnt_off00005a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A55 9284 bytes
SHA-256: 474f929e12577bced3d95ba736382844a86f899ec19529dabdef2166c9cfdd52

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