Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd9e8069cd0fe72…

MALICIOUS

PDF

42.9 KB Created: 2020-07-30 21:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72f0d0db77a3767ca87bae97569c7f72 SHA-1: dab477adc15b76a9ab9ecd3b24feb780ec9164d6 SHA-256: 5bd9e8069cd0fe72e5b65a89d424e6346f1245b387d57a984daf30a11085539a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to a redirector URL (https://ttraff.ru/pify?keyword=accounting+research+topics+for+undergraduates+pdf), indicating a phishing or scam attempt disguised as academic content. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded links suggests an attempt 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=accounting+research+topics+for+undergraduates+pdf In PDF document text
    • http://files.laneanimalhosp.com/uploads/1/3/1/6/131606408/murajaxosa_kalata_medazexoreraret_wibuvuweje.pdfIn PDF document text
    • http://files.simplymassagebexley.com/uploads/1/3/1/4/131482853/xamugexonuxobiwibala.pdfIn PDF document text
    • http://files.wicklow.coralleisure.ie/uploads/1/3/0/8/130874541/7906750.pdfIn PDF document text
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdfIn PDF document text
    • http://files.ahigherhealing.net/uploads/1/3/1/3/131398100/rufajaluzojiriw.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/1/0434/8428/3033/files/woxitigasigariniz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/7431354098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4312/6438/files/54900230258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0963/7533/files/25302923606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/28486711230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/51499957582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6243/3694/files/teladuvanotaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/89374002572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/dujenagemikiparoribivem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/kumulavevul.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_off00006ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB5 5256 bytes
SHA-256: fc8234b7595e1d1fcf73f15723d1f607b7457cc131b31176b6a127d99d31b995
font_01_sfnt_off00007c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C86 9856 bytes
SHA-256: 948c69327d9190bde2bc58514c696cc30378ebd52588ce4b92abde63c2972e82

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