Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6aeca711d080eb…

MALICIOUS

PDF

118.6 KB Created: 2021-03-24 03:59:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4937fd7a466ae7306e362b22a1a99d7 SHA-1: 58f65c092ec5fbc3a69cbe45a321844b93e73ff7 SHA-256: 3c6aeca711d080ebf59244c539177a0c2314a11569a1af18dc264e89784d38cd
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jumiwimov.ru/aws?utm_term=childe+harold%2527s+pilgrimage+canto+3+pdf
    • https://cdn.sqhk.co/xotabuti/x0hdOZl/asean_integration.pdf
    • https://wowujagudafu.weebly.com/uploads/1/3/4/7/134751604/pukuxuzizan.pdf
    • https://nuranisemamev.weebly.com/uploads/1/3/5/3/135324344/ragesekomap-faluf-rezaz.pdf
    • https://wapexuji.weebly.com/uploads/1/3/5/3/135329723/dutujomagopu.pdf
    • http://kakolamilasaru.medianewsonline.com/good_group_topics_for_elderly.pdf
    • https://fimudelowuj.weebly.com/uploads/1/3/1/4/131455024/jekerezuvow.pdf
    • https://cdn.sqhk.co/fanekizesedi/Lgin9hf/87083098349.pdf
    • https://cdn.sqhk.co/vapezuwe/jfnhgjf/26486885444.pdf
    • https://vuxosulaleko.weebly.com/uploads/1/3/2/6/132695375/6309640.pdf
    • https://bodosimif.weebly.com/uploads/1/3/3/9/133999894/mosupogik_lurijebulamulu_jezoroxum.pdf
    • https://dinowupeguf.weebly.com/uploads/1/3/1/3/131379410/zamelerewuwutarade.pdf
    • https://cdn.sqhk.co/wubunepan/VCrYjf2/instagram_hashtags_for_followers_copy_paste.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7e359bd9-037e-4219-b9b5-981926e7cc23/cuantos_centimetros_cuadrados_son_1_metro_cuadrado.pdf
    • https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_cbc7ea6e450f446b90654f774ca5a649.pdf?index=true
    • https://uploads.strikinglycdn.com/files/d0893e06-b43d-44f9-973d-dbcb822b8553/linirekezatesu.pdf
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_b1743c78dceb4361a113f861cc183600.pdf?index=true
    • http://satogitexuvo.myartsonline.com/catalogo_avon_campagna_18_2020.pdf
    • https://cc968bdf-8a18-4a65-a72d-893c706ef441.filesusr.com/ugd/bae363_e567dd9f78a1409ba23c2bb1b69ba810.pdf?index=true
    • http://juzapurul.onlinewebshop.net/market_leader_business_english_accounting_and_finance.pdf
    • https://c7fb3737-a2fb-4e06-b71d-f78b648bb0a4.filesusr.com/ugd/a9248e_77a9a87d02bc422ea49102a1ddbd1e53.pdf?index=true
    • https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_b74785e71d0444ca86033f24b5abd62b.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019317.bin
e0941ec5b1b7301d62fe5c0ba832be16ff7054c3efd10086fc0de14902d12ac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19317 5672 bytes
font_01_sfnt_off0001a63a.bin
b9f92e62af1d1b8b82f824812f84c8850f3c7320b1380634da2ad3ea6e642d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A63A 11152 bytes

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