Malicious PDF — malware analysis report

Static analysis result for SHA-256 edeea28f636b92dc…

MALICIOUS

PDF

47.5 KB Created: 2020-08-27 21:11:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbc809cab0c81a8fbc66e3603c14942c SHA-1: c64c11e4206563fd36d54e7f44a586a92a9426f1 SHA-256: edeea28f636b92dc124961cd9368e0a078fb999093f1219d6165652b5f555918
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate this is a link farm designed to redirect users. The ML classifier also strongly flagged this PDF as malicious. The document body itself is heavily obfuscated and appears to be a lure, containing the malicious URL.

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=estructura+de+un+analisis+descriptiv In PDF document text
    • http://files.fittingroomligonier.com/uploads/1/3/1/3/131379268/wujusuruzasojuwepadu.pdfIn PDF document text
    • http://files.kecns.org/uploads/1/3/1/8/131871864/movolemamofejujukajo.pdfIn PDF document text
    • http://files.aedt4200thesiscourse.com/uploads/1/3/1/3/131398334/6080643.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/1/0431/2793/1029/files/sigigokebobekiboxurer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8773/2644/files/chaos_tunnels_scan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9582/5314/files/32968641548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/bithynia_krall.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8402/8833/files/electron_configuration_review_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/vofamefegilirubid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5092/5223/files/biochemistry_mcq_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0411/6637/files/niwofofejikekufilotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3115/7143/files/78011373918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/factorio_oil_burning_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0718/0959/files/tesodalawenamox.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 4

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_off0000784e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784E 5084 bytes
SHA-256: 575200fbe2ef6bcf534831ca8b462f8565f65b07fcfa9abd558a8963e9f45ffe
font_01_sfnt_off000089a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A5 11692 bytes
SHA-256: a527bd327027f510f1be54d9952284923b5264f1d7a3317da76ea5043eff2b40

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