Malicious PDF — malware analysis report

Static analysis result for SHA-256 d928283e21b0e7fa…

MALICIOUS

PDF

42.7 KB Created: 2020-08-11 01:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97c80843053e9f03c83cdbdbefa4184a SHA-1: 0fb0681dc8a118b13510dec348370c8ee6682151 SHA-256: d928283e21b0e7fa72f66cc46328e85ebe0d90a4abbfa341d19e5f4d9785b9b8
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 PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to 'arduino mega 2560 r3 datasheet pdf', suggesting a lure to disguise the malicious link as a technical document.

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.cc/pify?keyword=arduino+mega+2560+r3+datasheet+pdf In PDF document text
    • http://files.soulspeakmarketing.com/uploads/1/3/1/3/131398591/devufarawob.pdfIn PDF document text
    • http://zuduza.nwscale.org/uploads/1/3/1/3/131383483/954734.pdfIn PDF document text
    • http://files.arkansasyouthconference.org/uploads/1/3/1/6/131637919/6364220.pdfIn PDF document text
    • http://files.magdalenahoffmann.org/uploads/1/3/1/6/131637136/31d61a.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/1/0432/0896/6301/files/mezipojomudazeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/pevatabovizosefewerir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0749/8647/files/xomojuwuvug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/phrases_idioms_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7430/3640/files/negative_exponents_worksheet_kuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/beranipewolijosovog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1162/0509/files/7798131313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/salesforce_crm_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/ralakatika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0836/0611/files/bilingualism_in_the_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/symbolic_interaction_theory_sociology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.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 3

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_off00006655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6655 6128 bytes
SHA-256: d0bdd4cce2e86e04e7648de130906f8ba9a7a90c1e89b23094a6c97fa737dfd0
font_01_sfnt_off00007af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF6 10356 bytes
SHA-256: c4abf346dd84d0ee133bf40d238056a669cb2366d453ec54f6a0c082e7b424f6

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