Malicious PDF — malware analysis report

Static analysis result for SHA-256 76bacfe5a7f089fe…

MALICIOUS

PDF

40.6 KB Created: 2020-08-02 11:36:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d5c6ea27ce03133604b7d42d03623d3 SHA-1: 51997500ef03b7f0ef93ec972524435df7bfde8c SHA-256: 76bacfe5a7f089fe7c498d98a2a6a71be21caa81c86ea35703d77c5c1f1ac640
194 Risk Score

Malware Insights

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

The PDF contains a lure related to drawing a 3D cube, which redirects to a malicious URL. The document body and heuristics indicate a link farm strategy, with numerous embedded links pointing to redirectors and potentially malicious content. The ML classifier strongly supports the malicious verdict.

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=how+to+draw+a+3d+cube In PDF document text
    • http://files.berwickglass.com/uploads/1/3/0/9/130969701/a46647d3776f7.pdfIn PDF document text
    • http://files.houndshangout.ca/uploads/1/3/1/6/131606092/d609e0f696a4.pdfIn PDF document text
    • http://files.davistennisacademy.com/uploads/1/3/0/8/130874058/mugobekoxisugimex.pdfIn PDF document text
    • http://files.adrianfaubel.com/uploads/1/3/0/7/130776619/legonarug-puwoli-wetizuj-ronegesavazukit.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/1/0433/0569/7438/files/44932580728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5083/5878/files/47890177484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/31343932752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/tiferatesowalazekoladibef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8348/9690/files/firabiniwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/4343927303.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7265/0397/files/91807689863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/gisageb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/lisupek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/zejixitudipiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/69329409162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9626/7168/files/xilol.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_off0000616c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616C 5080 bytes
SHA-256: 8fdc948429519f33a853fe85511a57158f59e6e6e6ad5bd688ea42389e8530cd
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 10256 bytes
SHA-256: 3abced39b66b48bc86a35dbfbd21da5b8ba6ddd1629f5c9608c570b7ad8dbb2e

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