Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b5a711ff2527fc2…

MALICIOUS

PDF

63.2 KB Created: 2020-07-30 09:20:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 348977594c87023df13c6a2ceee2df2c SHA-1: e6e646fd3abd335765d3169b1527924b742defbd SHA-256: 6b5a711ff2527fc2e45b9780902bef3758783430800f90a359da92fd84676e21
194 Risk Score

Malware Insights

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

This PDF file contains numerous links designed to create a link farm, with a primary redirector pointing to a malicious URL. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's intended to trick users into visiting a malicious site via a deceptive lure. No scripts were extracted, but the embedded links are the primary attack vector.

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=accoast+trial+pdf In PDF document text
    • http://files.richardjespers.com/uploads/1/3/1/1/131163632/4699160.pdfIn PDF document text
    • http://files.chimpsevents.com/uploads/1/3/1/4/131437318/3336238.pdfIn PDF document text
    • http://files.borderdentalstudygroup.org/uploads/1/3/0/8/130874627/6948eaa.pdfIn PDF document text
    • http://files.doggiedaycareconsulting.com/uploads/1/3/1/3/131384175/nolidevowa_dufuponalasini_bomudoto_togof.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/1/0428/1224/4134/files/musotevaraxibetulidonino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3215/6059/files/vazerotusajopasakixife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/13929164475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/84916199141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/76573893266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/97953350924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/jotofijenixokap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/96310682030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3004/5091/files/32953288147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6917/files/53144628822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8282/files/pegewipujivirimolijolixif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2489/9496/files/75520169427.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_off0000bd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD8A 4704 bytes
SHA-256: 224b58218c09f5be1a12956d28bc9e800805be72f7e24afd1824e1b72d3b6e26
font_01_sfnt_off0000cd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD87 9896 bytes
SHA-256: cb310733778860382a29006cd6aab88b74ec5e5dc4a8a3518d13ee4388803fb3

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