Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed3dd0ef02fdf47…

MALICIOUS

PDF

67.8 KB Created: 2020-12-02 22:34:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b10e9e97c4da49028e976e0703652a73 SHA-1: 26d90dedb9ab2a0aabca7c98fbbd68a661999634 SHA-256: 8ed3dd0ef02fdf478e61819cea6047039998581fd41f4d9dfb03c30a46139026
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many pointing to other PDFs, suggesting a link farm or redirection mechanism. The primary malicious URL identified is trafffi.ru, which is likely used to host or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/aws?utm_term=hd+nature+wallpapers+1080p++for+mobile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380380/normal_5f9a1960198c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f91bdf867307.pdfIn PDF document text
    • https://razulusajo.weebly.com/uploads/1/3/4/4/134467314/3747188.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/8911912f5f58fde.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/e9c80007-c1a1-46cc-8fe5-1aa3b6e124d2/zinadenadabokexulofazaxub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdfacbfa04221c71e6a887/1606286027555/minecraft_mod_roots_2.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/22278262310.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52eb61e25426e12f61d4/1606374124379/terminator_future_war_gif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebdfd3d9-632e-4b5f-b9d3-c2f98c7378da/96406863001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30476639-ea3f-46b4-a7de-416e923b5825/jibopituz.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/30952140596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0524fd8-c31a-44db-8265-7c063c97e187/bepufonejipitomoropofetib.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc280b3405d5340f333d31f/t/5fc38824145a8629dc1e1209/1606649894134/hotstar_latest_apk_for_android_tv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea48dc4a-db38-4ab9-88e6-9ad24d5b476b/discovering_psychology_cacioppo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe04baeaf37e3b6462818d/1606288571141/76487941012.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_off0000c9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9F7 5768 bytes
SHA-256: 3c5dfe37c303e0e8f4ce3ea71b03c19940be95ca7c6b17b42770fb6be0f2dbc6
font_01_sfnt_off0000dd91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD91 10832 bytes
SHA-256: 8bb3b511cca8a7f16ba966bc490b54839546bf102e4440302ec177c980b15294

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