Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6dbb8d6e6aceb45…

MALICIOUS

PDF

71.2 KB Created: 2021-02-14 00:12:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5f09fb087035da36200890d4e7b978d9 SHA-1: 9023a310448cbca7759964163eb8262dc558a726 SHA-256: c6dbb8d6e6aceb455d3b064c79e7321c07b9b6f8e17f18f5de780c95d651e936
136 Risk Score

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=sustainability+leslie+paul+thiele+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4422134/normal_5fdf2fc6b27c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480145/normal_5fd0f0fb0fc2b.pdfIn PDF document text
    • https://cdn.sqhk.co/bipadifudame/CjgoifE/block_strike_download_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405467/normal_601bbc1b60886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fe9883705ab8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463279/normal_601ae46401d04.pdfIn PDF document text
    • https://cdn.sqhk.co/womalakifaxa/hhgfGgi/kuzukevim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459796/normal_5febe9d22ca67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://povasapodojika.epizy.com/stochastic_oscillator_technical_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/nojokudoxukakigi.pdfIn PDF document text
    • http://pikoritefum.epizy.com/6811810046.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/66252467005.pdfIn PDF document text
    • http://boxokur.epizy.com/broken_but_beautiful_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/majuwedunozobetaw.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_off0000da6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6A 5376 bytes
SHA-256: a7cc7b9799c382dc533a948f9f8162d02a68c04ae568cc9adfb7521f5e6afc77
font_01_sfnt_off0000ecb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECB0 10280 bytes
SHA-256: 1df1ad01fcd564f800315fe8375d51a1067434beaf1f2f33756acf5319bf01ae