Malicious PDF — malware analysis report

Static analysis result for SHA-256 c59bc022e2970b05…

MALICIOUS

PDF

38.3 KB Created: 2020-11-03 22:27:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 31024f33c0b8139fe20ec0cb66a1a597 SHA-1: d1076322ac2dcdadb8bdb57c28a9f0cfd8ae42b1 SHA-256: c59bc022e2970b05537964ea9bed88dfad39e56c7ece978f94948fa536548187
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/strik?keyword=district+60+pueblo+schools In PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/jenefemafawal.pdfIn PDF document text
    • https://pasutexovemas.weebly.com/uploads/1/3/0/9/130969198/pamixojowepinona.pdfIn PDF document text
    • https://retujesa.weebly.com/uploads/1/3/4/5/134529196/5623956.pdfIn PDF document text
    • https://dajexave.weebly.com/uploads/1/3/4/3/134352807/jawawewurev-vifirabizopor-sijujemapigiro-dojava.pdfIn PDF document text
    • https://vunevodu.weebly.com/uploads/1/3/4/3/134363839/wonefivuka.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/88d977da-1263-4c16-8e20-8d43c1bf53d8/spyro_the_dragon_game_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/terraria_tremor_mod_wiki_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1a868ee-8cdb-41b7-b132-8926cf6288b1/88616180504.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/95092798969.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/wuvemixuburudupiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/ralalugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4291e754-e731-4364-82ce-99c4c39d1770/20619527824.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a67f37c7-6967-49fd-9edc-0d45f99a977b/39779976241.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_off00005855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5855 5244 bytes
SHA-256: 2b317baaf0499f16eb2b50818849f23b89909197ed8766de4efd9c741b306312
font_01_sfnt_off00006a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A23 10284 bytes
SHA-256: 27d0311166d6f28c02a06616db8cf463b1f7fb529d767a32bcfe49164e559b4f

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