Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66c48a48f6c77b0…

MALICIOUS

PDF

51.5 KB Created: 2020-08-04 02:01:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 196b2adeda4ccc2919df22116cde15d4 SHA-1: ba5a5c982e51114e4864810df93ad68bb144222b SHA-256: a66c48a48f6c77b05c986cbb3ec1778b543850d9cf56925025efcdc9c260885f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that a link within the document redirects to known malicious infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Zimsec o level mathematics questions and answers pdf', suggesting a lure to disguise the malicious intent. The presence of numerous Shopify-hosted PDFs and other obscure domains suggests a link farm designed to obscure the ultimate malicious destination.

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=zimsec+o+level+mathematics+questions+and+answers+pdf In PDF document text
    • http://luzibonu.whisperingpinesfarmpa.com/uploads/1/3/0/8/130814017/542dae67.pdfIn PDF document text
    • http://files.gitxsansimalgyax.com/uploads/1/3/1/3/131384340/970805.pdfIn PDF document text
    • http://files.saveurchico.com/uploads/1/3/1/3/131379873/sunibekulefako-lorobo-vesutirukafo.pdfIn PDF document text
    • http://files.centrepointecincinnati.com/uploads/1/3/1/4/131406413/e08b8.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/1/0429/3564/8409/files/lefexifikawurosarukuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/68022923786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6019/9573/files/33010130385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/40473752909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7188/files/99733424161.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3496/files/47642405944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/vubozetekobatix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/rorevuxisadebepolapupebas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/10367585228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/25105425214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0440/3613/files/73418161627.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_off0000886a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x886A 5628 bytes
SHA-256: c646cccf50a8f4a0dab9eeb0155d78ee90629b2f9ab037eedd109019530f8ed6
font_01_sfnt_off00009b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B77 11152 bytes
SHA-256: c3746d19e83a80fa277e3b90be15660500d9f781fe9233f3ca630fb313718572

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