Malicious PDF — malware analysis report

Static analysis result for SHA-256 a983f56b0e20c567…

MALICIOUS

PDF

36.8 KB Created: 2020-08-13 19:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84b385d18c9d5ad5e0b076fcad343ddd SHA-1: 988da2bee99d0f7568eea6155a6958086bef017d SHA-256: a983f56b0e20c567ad092d9e6d596602af42878115b4b5c23d7b264d231c2675
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, traff.cc, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a phishing or scam attempt to direct users to malicious content. No scripts were extracted from this sample.

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/wb?keyword=computer%20systems%20performance%20evaluation%20and%20prediction%20pdf In PDF document text
    • http://dunileb.jrsigningservices.com/uploads/1/3/1/3/131382243/favadeta_tajuxazamubet_dikusajorif_zifibusanofi.pdfIn PDF document text
    • http://files.drjaygrossman.com/uploads/1/3/1/4/131453588/marivawilerumo_radiletifef_sofukat.pdfIn PDF document text
    • http://files.kaelynschmidtdesign.com/uploads/1/3/2/7/132712282/2725546.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/1/0432/2128/7080/files/pirisopowoxikububezosuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/soundcloud_converter_to_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/ansys_fluent_documentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/75591358897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/94380646429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/gapusovovunonunaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/zigeperiketal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/76962383561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/dizirujupilasazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/angielski_b2_podrcznik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/31072742869.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 5

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_off00004eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFF 5368 bytes
SHA-256: 7e76f80b307f8ad4063f840fc66f91904ee06bd7a343a4509270b9a69c5803e3
font_01_sfnt_off00006136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 11112 bytes
SHA-256: 745b16d4ace81d141a0a576ea8323c0afd86f7c0d74a4fa20cb1047b4525ac83

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