Malicious PDF — malware analysis report

Static analysis result for SHA-256 46437331872ed4bb…

MALICIOUS

PDF

134.7 KB Created: 2021-04-05 20:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: cf47132843737ff450466e8275090b92 SHA-1: 590fb1b7b02233441f753e2f14811c7bce99d186 SHA-256: 46437331872ed4bb5bb27b304fbf21a28302f11f1840f4659c6c6533bc67622f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/award?keyword=bernie+madoff+book+pdf PDF link annotation
    • http://trujillostacoshop.com/66379734867k8ppq.pdfIn PDF document text
    • http://gobigs.space/how_to_tighten_bobbin_tensionojqj5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_6052405b04b8d.pdfIn PDF document text
    • http://priz24.site/smash_hit_mod_apk_latest_version_downloadxtjb6.pdfIn PDF document text
    • http://walawatomu.mywebcommunity.org/75296488039.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467036/normal_5fc72486b2480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_604a905034388.pdfIn PDF document text
    • http://btsworld.org/fejigawagobufikitawikasct0er.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383471/normal_602d797a7e8f9.pdfIn PDF document text
    • http://keepmaxi.space/bopirufhw9jn.pdfIn PDF document text
    • http://zenarajare.22web.org/47670696868.pdfIn PDF document text
    • http://puzodimodopa.22web.org/78176463191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_6024f0a586625.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jofelutapegor.epizy.com/adobe_audition_effects_plugins.pdfIn PDF document text
    • http://vugovule.epizy.com/fitutujofunojolasus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51cf2687-3fe6-4f8f-bf7b-d980408b86a2/what_is_the_meaning_behind_russian_doll.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4977383d-5da1-44ed-a19e-e466cdd4aefc/86660326772.pdfIn PDF document text
    • http://zesugipove.onlinewebshop.net/24054733609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dd2a09c-d0aa-44ac-b946-33f6ce24d896/10804048566.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c0cdc7-e416-42b3-8056-3159eb583b4e/66563175125.pdfIn PDF document text
    • http://sikezixivuvuda.rf.gd/level_capacity_strategy_characteristics.pdfIn PDF document text
    • http://gizadopozi.epizy.com/dudenoso.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/72185790116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292a6a43-3e8d-4d75-9fab-320d07ad6788/mufemipumeniwumabe.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_off0001d325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D325 5232 bytes
SHA-256: 8f40752dbd316bfd6d92c0b9b73efd59b7076078745b7d8564ac7f2843d2e6fe
font_01_sfnt_off0001e4dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4DD 11996 bytes
SHA-256: 93e9e7b605fe8395da2ce465ce712aa0d2654d647926c698f4bed66a868df8a8

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