Malicious PDF — malware analysis report

Static analysis result for SHA-256 5db51c37b75936af…

MALICIOUS

PDF

64.1 KB Created: 2020-08-02 02:07:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4165327fb3527d3a07e5a8cd756cbae SHA-1: 586e4e150563ec97e97316cd8b56f0c858d6fd93 SHA-256: 5db51c37b75936afcda244aff0bcc12c30e4a3a3a8279870556afbd495e74aa0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary redirector URL is https://ttraff.com/pify?keyword=joelle+van+dyne, which is used in conjunction with a large number of other PDF links, suggesting a link farm or SEO abuse for phishing. No scripts were extracted, but the presence of malicious redirectors is sufficient evidence of malicious intent.

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=joelle+van+dyne In PDF document text
    • http://files.marlboroughsafetyforum.com/uploads/1/3/0/8/130813997/getoruvopel_sepesunura.pdfIn PDF document text
    • http://files.climacusconference.org/uploads/1/3/0/7/130776033/614719.pdfIn PDF document text
    • http://files.premierdanes.com/uploads/1/3/0/9/130968994/7024a.pdfIn PDF document text
    • http://files.costleyandpartners.com/uploads/1/3/0/9/130969204/34bfdeaba076a4.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/1/0429/9682/6273/files/revumoxeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/juxozawexumubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/29824543217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/rigefofakatas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/sisexufubugitajixepuginon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6598/3655/files/tavapazafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/rajokuvonuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/zawepune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0025/1036/files/gungeon_dark_marker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/66087671323.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 4

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_off0000bf13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF13 4696 bytes
SHA-256: c974cf7e5fa6656a5f1fd40edd2f6915d584c3f46b8084d7c8973fa1b38f38ea
font_01_sfnt_off0000cf32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF32 10672 bytes
SHA-256: 34e551e34c693a67c2b8560768ea9cfc4d98f4600fdebbed82bd3d52bf06f627

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