Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7e3892cb2fce39…

MALICIOUS

PDF

84.5 KB Created: 2020-11-02 05:36:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6b939d767fbefe8c8915979ebd4e803c SHA-1: 5a55542ca038182cb074bea4002695e4137d1f96 SHA-256: ed7e3892cb2fce39a15907e338a0b6a59fbfe9ea4922c93085808561ec5c229a
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://cctraff.ru/123?keyword=yellow+fangs+secret+ar+book In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_5f9872234386e.pdfIn PDF document text
    • https://gilowowiwojet.weebly.com/uploads/1/3/4/3/134314399/jopowarugasekokosul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f8d5f8aefee2.pdfIn PDF document text
    • https://sakifawabepufa.weebly.com/uploads/1/3/4/4/134466371/3bac1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f870392d1d42.pdfIn PDF document text
    • https://nifadajenekipib.weebly.com/uploads/1/3/4/3/134305148/c6641b65d30aabe.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/zodafapinizu.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/8993616e-dddc-420b-a773-cffbf9fb991d/zixutajuvewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0753/0925/files/dragon_age_gift_giving_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ee0a4e8-d255-47ca-ba29-2b9eb65f3a93/get_actor_rotation_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df39c6ef-3af9-42e9-805c-415b643dcabc/68167598990.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF833 4492 bytes
SHA-256: 0931e591a7846db4a142260ed34a55cf3673abd47fd81222b67574ee6cbd32a6
font_01_sfnt_off000107ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EC 5308 bytes
SHA-256: e33bb6b4c83cb4940b5b9b4277513343228ac667415e6cf796ebbd00256e59ff
font_02_sfnt_off00011a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A23 13816 bytes
SHA-256: e7f48baad7b8b1176abf6226389edaa484b8f6f7f7431c409719d504501cedd3

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