Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ce4233456d1e20…

MALICIOUS

PDF

46.6 KB Created: 2020-07-25 03:38:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 559b1718c7c495bd311378f3e16197c4 SHA-1: 3ecfed85decb939828830cfa35e4b7f3d8b87c11 SHA-256: 46ce4233456d1e205eb48337032f48110f5dbdea6f6efa5af77671e3f485a2a4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to a known malicious redirector. Another critical heuristic, PDF_SEO_LINK_FARM, highlights the presence of a link farm. The document body, though heavily obfuscated, contains text related to academic materials, suggesting a lure to disguise the malicious links. The primary malicious IOC is the redirector URL, which likely leads to further malicious activity.

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=excursions+in+modern+mathematics+seventh+edition+answers In PDF document text
    • http://files.valleyhuntervizslas.com/uploads/1/3/0/9/130969695/mezuget.pdfIn PDF document text
    • http://files.dharmayogawheel.com/uploads/1/3/0/7/130775197/pekalebosov-doburutuwidunoj.pdfIn PDF document text
    • http://files.valerieconnor.com/uploads/1/3/1/4/131437285/1983251.pdfIn PDF document text
    • http://files.southactorsguide.com/uploads/1/3/1/0/131070379/xerowoko.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/1/0433/7614/8638/files/pasarom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/45083310128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9622/5432/files/98654333367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/47760386635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7028/3173/files/tejumotilutodux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/mefafidemumawaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4939/4071/files/botemisotanowum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/20115702496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5363/7018/files/41946582767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/wuvabuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/kadakif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/xixowupagixiraremeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/tulitudosazenuxiwazok.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 6

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_off00007637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7637 5204 bytes
SHA-256: f7e0c6647778d3469bf5dce4bce62d95d8b3bc3a743bf7329ed4d419327ee73b
font_01_sfnt_off000087c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C5 10908 bytes
SHA-256: fbfba7933b1fa0bcfd628b0b700dad49268edc1ab26d70d5416b9c6e8975a29f

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