Malicious PDF — malware analysis report

Static analysis result for SHA-256 95308efbe7f7fd70…

MALICIOUS

PDF

44.0 KB Created: 2020-08-12 16:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb898291ee5e981856e523bcaa22b9d0 SHA-1: b6b905c05bcec1c245cf971df12565d6fe5464d9 SHA-256: 95308efbe7f7fd7009663f8a0af7321ba215f9c3a38479589c5330872ed035c9
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a book download, indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The ML classifier also strongly flagged this PDF as malicious. The primary malicious IOC is the redirector URL, which likely leads to a phishing or malware delivery site. No scripts were extracted from this sample.

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=reading+book+english+pdf In PDF document text
    • http://files.tapestrymft.com/uploads/1/3/2/6/132681409/wojuvidito.pdfIn PDF document text
    • http://files.meredithlauralynn.com/uploads/1/3/2/7/132711947/6427535.pdfIn PDF document text
    • http://gunos.navigatorsboston.org/uploads/1/3/1/0/131070420/9276dc639ea64.pdfIn PDF document text
    • http://files.joeberg.org/uploads/1/3/2/8/132815172/35f57d122c884e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/college_mathematics_for_business_economics_13th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bagamabuwoputibebebewara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0811/5366/files/powerful_adjectives_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0597/5462/files/definition_of_phonology_according_to_experts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/68814115360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/graphql_and_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/95928730302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/60194858193.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6185 5124 bytes
SHA-256: 22f17e4a2b9b10a3c7c1a6dea66f386c49a0147a432b9513f11a40c1ff80bdf1
font_01_sfnt_off000072e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E1 10076 bytes
SHA-256: 1b690996d3bad7ee32a25d55a4ab23db24de3fa1ff2b67c37b497193a27e77e9
font_02_sfnt_off00009550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9550 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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