Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1cc38f7dc46c998…

MALICIOUS

PDF

66.7 KB Created: 2020-11-08 00:17:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0b5e987d0b97901d15257ca2901b9021 SHA-1: 2b93787d53ccd59c2f634b92f09d6215ba7d1cfb SHA-256: e1cc38f7dc46c9984978747566b121c07e21d1f2d085d47e6343407b1ee01cf2
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/aws?keyword=antique+philippines+logo PDF link annotation
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/kasubijugam_komilawonifed_demukikafe.pdfIn PDF document text
    • https://lilikisewusufod.weebly.com/uploads/1/3/2/6/132682662/149616acb5d6d89.pdfIn PDF document text
    • https://watuboxe.weebly.com/uploads/1/3/4/5/134588214/tepux-jezirinuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450727/normal_5fa1fd6d3090e.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/c989e857c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_5f93eccea1c96.pdfIn PDF document text
    • https://gozofuma.weebly.com/uploads/1/3/0/8/130874065/xelaxofelap.pdfIn PDF document text
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/7413940.pdfIn PDF document text
    • https://zasigusedorel.weebly.com/uploads/1/3/4/3/134386673/21feb7d193af231.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/7a84188c-1f00-416a-9d2d-2b6347fcf4c4/98051823851.pdfIn PDF document text
    • https://tojovaw651389336.files.wordpress.com/2020/11/catering_business_plan_south_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d928e8-51df-40c7-8342-1b473d634d6d/52559076219.pdfIn PDF document text
    • https://sevuropigo.files.wordpress.com/2020/11/cladogram_and_phylogenetic_tree_work.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_off0000c565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC565 4892 bytes
SHA-256: 29e4a4c9ee0837a4ccb161e57b689ebab2f2962dde6e51c4826ce6643864f90c
font_01_sfnt_off0000d60c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60C 12164 bytes
SHA-256: 45b4b323e60cbc7261e41655b4c5a101cb01980716685c85218f5e517961b1d0

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