Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b67f0b7d92fe7bc…

MALICIOUS

PDF

47.0 KB Created: 2020-08-06 19:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dadbb81ae4a940c0ff510be9dbc9baea SHA-1: 682f9ac4845396489cc30df0ea6171159c5fc4cf SHA-256: 5b67f0b7d92fe7bc8a30da3f2908f4da54d59939a11893d89b5f7dcf7896e311
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains text that appears to be part of a lure, and the presence of a link farm heuristic further suggests a malicious intent to drive traffic to potentially harmful sites. The ML classifier strongly supports the malicious verdict.

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=bigger+faster+stronger+program+pdf In PDF document text
    • http://files.elizabethandersondance.com/uploads/1/3/1/8/131856479/xovusel-sededojonetog-migoguvufotevak-sutowafavisi.pdfIn PDF document text
    • http://files.oasismassagemckinney.com/uploads/1/3/1/3/131384573/gakijapadajadilurat.pdfIn PDF document text
    • http://wazol.michiganpooltournament.com/uploads/1/3/0/7/130775085/tenabupizid-ribowumudapili-pufudiv.pdfIn PDF document text
    • http://files.tdobbsart.com/uploads/1/3/1/4/131454523/6453266.pdfIn PDF document text
    • http://files.watervlietpubliclibrary.com/uploads/1/3/1/3/131398117/d497b38.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/1/0433/3663/0422/files/skyjack_sjiii_3219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/13734025789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3382/9271/files/98821886604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/bekirozevogonajalib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1428/3686/files/jupibesolidome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/23747155057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7011/2423/files/10822361679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/27095391544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fesulemenakasisot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4758/1856/files/jiwetodul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/html_to_api_free.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77DD 5380 bytes
SHA-256: 2bd84c51ec7b8dba7259799ae3f9845ebac3f51468c7393dfebe497e25b40b12
font_01_sfnt_off00008a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A17 10764 bytes
SHA-256: 453911be6380f6f3e43193e0fca5f56b3ae60a3a722d9aea5c2366bf3c004d73

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