Malicious PDF — malware analysis report

Static analysis result for SHA-256 a569105dd95b35de…

MALICIOUS

PDF

73.9 KB Created: 2020-11-20 11:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6f9fb3879841d04a3051f05e6f3d2ad6 SHA-1: bda5fb2b287d178eb4439bf4a1b77359f21aa529 SHA-256: a569105dd95b35de95a94654fe768a9a865b65559c731b4dd429e256ea7ddf45
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. This suggests the primary purpose is to direct users to various external websites, potentially for SEO manipulation or phishing. While no scripts were explicitly extracted, the presence of numerous URLs and the ML classification indicate malicious intent.

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://trafftec.ru/123?utm_term=elsword+dimension+witch+skill+build+pve PDF link annotation
    • https://roresino.weebly.com/uploads/1/3/4/3/134364893/vofuvazasazi.pdfIn PDF document text
    • https://ranefegol.weebly.com/uploads/1/3/4/4/134498511/kupimininoke.pdfIn PDF document text
    • https://vunixumo.weebly.com/uploads/1/3/1/4/131453253/4672197.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/196d02d71608a2.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/gowebabuxogiro/42614935565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/056e31d3-7aec-495a-b9e9-37b7610959e9/16857646948.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/tamedafevuduse.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/70526164364.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02625fcd-5901-4692-9d2c-0716096932f7/cronus_and_rhea_titans.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/causative_exercises_1o_bachillerato.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/jason_burkett_baby.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0216e96d-7d74-4d25-989c-659e8f6ed434/simplify_radical_expression_worksheets.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB37 6328 bytes
SHA-256: 22036e82ececa013769acfe57094c3c3964573a9cff7b84af0ce790f10ede669
font_01_sfnt_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 5416 bytes
SHA-256: e186d8986320373bf0ea611741fd3ff6b2c403ff1b61c229dfbd00a79526d40e
font_02_sfnt_off0000f38c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38C 11656 bytes
SHA-256: 43c11617d44136b8c845c94af9881fc63adce3a8de7738648bb9ba24b8b3b004

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