Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9723fc460bac0b…

MALICIOUS

PDF

42.0 KB Created: 2020-08-03 12:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 016007f59161cb1f4159880185418a6a SHA-1: 7774ee9dfb37a5e8c6e72742846fb282147c3d7c SHA-256: 0d9723fc460bac0b57b7d1933fcab758b09d9959fa8fe28fb2e0edd0f4adac29
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a redirector service designed to lead users to malicious or scam websites. The document body and embedded links suggest a phishing lure, potentially disguised as an academic resource, to trick users into clicking through to harmful content. The ML classifier strongly indicated maliciousness, and the presence of a link farm reinforces the malicious intent.

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=auxiliary+verbs+and+modal+verbs+pdf In PDF document text
    • http://files.hengjieai.com/uploads/1/3/0/8/130874457/xusoliva.pdfIn PDF document text
    • http://files.laurenballarteducation.org/uploads/1/3/1/8/131856170/nupizob_dulizowu.pdfIn PDF document text
    • http://files.markkarsten.com/uploads/1/3/1/6/131636954/gufiromadavamud.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/1/0432/8099/0366/files/35646193689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/list_of_state_abbreviations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/jizajojabigiwurafojazuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/accounting_books_journal_and_ledger_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/bivafot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/92601814821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/38314898166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/15322427591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6667/1782/files/lewiston_me_weather.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_off00006715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6715 5548 bytes
SHA-256: 3c34899e4a302bb9ef64d2e1daab57ae7a4b8f1c036809bdd63c7cf69b1115bf
font_01_sfnt_off000079e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E8 9748 bytes
SHA-256: 28e38c4d5269e2f6c0534d7613311c9cff057daf9f966b3fd999e13fdf02bebc

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