Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc277fcf6321f1c…

MALICIOUS

PDF

68.5 KB Created: 2020-11-13 07:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 62de28face15c5fea87cdcb88db0746e SHA-1: 9497bbe3fd041f0b7c1750c532b47365481c3fa2 SHA-256: abc277fcf6321f1ca3c4f5a80f0ce8d75ab76b6b6c5becc0794b651af8339a1b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URL suggests a lure to a specific website, likely for credential harvesting or further payload delivery.

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://traffnew.ru/123?utm_term=osrs+ardougne+medium+diary+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409818/normal_5f945b397eee2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f919708c8100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_5f8a7362193a4.pdfIn PDF document text
    • https://kuwavumiwedow.weebly.com/uploads/1/3/4/6/134673312/fagadub.pdfIn PDF document text
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/8a9a0ea0fbc82.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/a8fc6881-2dc0-40f8-b77c-85a612820318/newomelifawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddae2e88-8a12-4acc-8e87-251acde02d4d/linux_command_line_and_shell_scripting_bible_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/gelefotenof.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/causative_passive_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/earth_s_systems_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/847b69a8-0090-498d-a779-9fbe04f4a56d/46953566804.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/latigirewesebezixutobowir.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/audio_engineering_101.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/the_brothers_johnson_stomp_video.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_off0000d0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D4 5240 bytes
SHA-256: 5c988b5a764e791ed66368806925cc1d33b9c73e0d6bfc5977cf86472776b7e8
font_01_sfnt_off0000e294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE294 10212 bytes
SHA-256: 3a12654d7e1dc09c468c8c1d03dca23b51844d6943a9151ca6797c9cad1589f8

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