Malicious PDF — malware analysis report

Static analysis result for SHA-256 b620acbdb61f5937…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 20:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e05ac3b08f858002b48ecd8f23143ab SHA-1: 996629ad5da7979d64dd37cb21aecc990ff94e1c SHA-256: b620acbdb61f593794d0b6f9adf40a25733b375500a524a126f8c794f54639f7
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 external resources. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify. The document body is heavily obfuscated and appears to be a lure related to 'De broglie matter waves'. The primary attack pattern is a link farm designed to redirect users to potentially harmful sites.

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.ru/pify?keyword=de+broglie+matter+waves+pdf In PDF document text
    • http://xorovu.inlandempireinjurylaw.com/uploads/1/3/0/9/130969045/1175874.pdfIn PDF document text
    • http://files.blindsanddecors.com/uploads/1/3/0/7/130775921/2463400.pdfIn PDF document text
    • http://files.nicoleedwardslimited.net/uploads/1/3/0/7/130775144/7026269.pdfIn PDF document text
    • http://rizeg.bzdickstudio.com/uploads/1/3/1/4/131437812/3872258.pdfIn PDF document text
    • http://rafot.mariuszoican.org/uploads/1/3/1/6/131637881/tosixazipefisavo.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/1/0433/6268/0984/files/elder_blank_gungeon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/38520648363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/jowevuzazof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9046/0324/files/effects_of_illicit_drugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/potizofaruvinip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3802/3581/files/betenowarebazubaraweg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/dulunifiwuxotolakezulozit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/bulevuvagalevarupukeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1384/6693/files/36393067185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/zugugebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/pathfinder_bestiary_box_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2629/8533/files/tic_tac_toe_java_code_against_computer.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_off000064b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B5 5652 bytes
SHA-256: 9e11de852e21b9f86371468700641b727307d55b0a5d3558850dff592525f146
font_01_sfnt_off000077ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77EA 10716 bytes
SHA-256: 95ff50fb86372c06f9f9598b777260d9442032eea6e2d11d140e9b2e3b0ae2d7

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