Malicious PDF — malware analysis report

Static analysis result for SHA-256 25202399bb24ab04…

MALICIOUS

PDF

146.1 KB Created: 2020-11-05 02:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 71c66023cea7291b73e545fde8072d60 SHA-1: ea990dbacc541ab365a13a6ad5b491c80d8c365f SHA-256: 25202399bb24ab04cc0948a40526f2598bf417b0d0e047619f14828eb76a37a5
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains numerous links, many of which point to redirector infrastructure, specifically 'https://ttraff.ru/123?keyword=rolesville+elementary+school+nc'. The document body, though heavily obfuscated, contains keywords related to the lure. The presence of a link farm and a malicious redirector strongly suggests a phishing or SEO scam campaign designed to drive traffic to malicious 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/123?keyword=rolesville+elementary+school+nc In PDF document text
    • https://dedetalorisa.weebly.com/uploads/1/3/4/5/134593476/gezawuzagowidusuvub.pdfIn PDF document text
    • https://pesirirovozag.weebly.com/uploads/1/3/4/3/134316115/bed4ada8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e8c1b4-be03-40e4-9e7d-3422dd466005/wiriwotuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aacc591d-0bcd-483f-a163-820c4ead8f96/vorixuzoxed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4727b3d1-f87c-47ca-bdf2-76877119d2c5/77973985977.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/2561133141.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/cambio_de_a_word_trackid_sp-_006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78bc3b8-93c2-4469-9c26-10bf8d2200ea/free_printable_black_t_shirt_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81269576-e46e-4beb-8e10-d8aee7f037c9/25907976895.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/fixonowumonufof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf839f88-a249-41b3-a6d8-ffd1e26fcbc2/lukiwososexufu.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/14715214375.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac183e39-328d-4608-af6e-e42b4f01f4f6/92522466533.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/azamara_quest_deck_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/23390671501.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_off0002028d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2028D 5208 bytes
SHA-256: 8ed0987cb38e13adc99cf19a1e081ede4ff6f903b52e84a846f9fa4f8a547b71
font_01_sfnt_off00021424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21424 11428 bytes
SHA-256: ca5b55098af8e2697e7e8a842aa0c4909f95f0d4cffd5290b73f581af762ffb7

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