Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b74ecdb87af7639…

MALICIOUS

PDF

44.8 KB Created: 2020-08-04 09:36:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c118a19bd5be9f2f3df78fd7a0b98e6 SHA-1: 0f4680da468ed15531af2edfdff2cd3f978f9d45 SHA-256: 0b74ecdb87af763966ebdf659be5a493cb937e7e7a811ad557c57f2a865c8352
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body and heuristics suggest a lure for free downloads, leading to a redirector. The ML classifier also strongly flagged this PDF as malicious.

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=billy+joel+just+the+way+you+are+pdf In PDF document text
    • http://files.thesolidrockndchurch.org/uploads/1/3/1/4/131408954/vituni.pdfIn PDF document text
    • http://files.rooznote.com/uploads/1/3/0/7/130776166/vugorirunak-rafabe.pdfIn PDF document text
    • http://files.bayjedesigns.com/uploads/1/3/1/3/131379833/zexirokimipu.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/1/0448/1197/6855/files/steven_universe_season_5_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/fexosaseribili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4266/7676/files/74365084436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8145/7061/files/xobajedibujig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/subaru_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/super_deepthroat_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8371/0117/files/68543306619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/virology_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9075/6259/files/8222801044.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 8

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_off00006ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF6 5448 bytes
SHA-256: 1d7ea5e1c3476a30358475f5c6c80773a7eb0f6d773235d5118239eeb0c46bbe
font_01_sfnt_off0000829b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 10364 bytes
SHA-256: 63edabee702f0a94640a75bff973f02ca95268194715bf72d0dae899774e465c

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