Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48ef2574227df81…

MALICIOUS

PDF

42.7 KB Created: 2020-08-18 16:27:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee160486993ffaba2ffa40ad10e861cb SHA-1: b396f0e0e714e437eddd61a814d6fe7c14c1b4ce SHA-256: b48ef2574227df8163c31265d2d97ba9eb7539a50c62063ffc7d2bc1ea130e7c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, likely intended to manipulate search engine results or distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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=the+cask+of+amontillado+pdf+holt+mcdougal In PDF document text
    • http://pelojete.worldwidepropertyinvestment.com/uploads/1/3/1/3/131379379/3843464.pdfIn PDF document text
    • http://files.justinedaisuke.com/uploads/1/3/1/3/131379213/rijazetin-woforoxegape.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/1/0440/1712/3478/files/opposed_piston_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3039/6574/files/2444947751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ligumugazawebamupewav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6114/8837/files/3073848725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/pilad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/lenguaje_musical_ritmico_4_ediciones_si_bemol_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/linux_mint_docker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0783/5292/files/morphology_of_plants_and_fungi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/how_to_adjust_car_headlights.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 2

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_off000069f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F0 5484 bytes
SHA-256: 3015bfdc25e58153b30f999dc81098e671e7ee47c9295c92f6ce043cd244c610
font_01_sfnt_off00007c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C7B 9684 bytes
SHA-256: 9788a3419fa30780afc64a43a6fe70218ee9601a1bded160cf278d1baa49a6f1

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