Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d083fb1e869dff…

MALICIOUS

PDF

43.8 KB Created: 2020-11-06 05:38:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9b1b3f7ffc966069105dfe7fa8673e1e SHA-1: 26d8eb55050b638777cf0e55be461a90890ba288 SHA-256: 27d083fb1e869dff9f714c9371cd0d20aaa4476533f7430b7b3098c1d11ec8de
96 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 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.
  • 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://trafficel.ru/123?keyword=mckown+funeral+home+obituaries+68601 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450046/normal_5fa49497ab604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5f8b1cdcc084e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379612/normal_5f967a541019d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409396/normal_5f9fc8ddc8a3a.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/6332dca5588470.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/gibovebuguxidegugome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1747b968-69fc-40f3-ab17-0b4acb0a520b/adore_me_reviews_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/29839603410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfcd5b9e-cb96-432f-a67c-b35907942cb2/football_ppt_slides.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/how_to_install_dios_mios.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/vocabulary_activity_cellular_crosswords_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/websites_to_watch_free_movies_yahoo_answers.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9A 5964 bytes
SHA-256: d2261eeffe3a69f11ffc2d453023503e4dbdbcd3dfebb8b490685361f413df89
font_01_sfnt_off000080e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E2 9832 bytes
SHA-256: 1ac1e0e9a22d7fbe82e102d7833e286c945b80a132a87ef7875797e03360be8c

Open this report in the interactive analyzer, or submit your own file for analysis.