Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a47d5ad9b9dfd1…

MALICIOUS

PDF

93.6 KB Created: 2021-03-22 10:06:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 16adb28947c6a28d24b247a2c3ffb7f0 SHA-1: 460c143ad0c0f66f1ed89c276f9a0414c710e4a4 SHA-256: 06a47d5ad9b9dfd1d34875b658d2715f0b19782f61384f0ae92050a16cabfa7a
254 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to suspicious or known malicious domains. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SUSPICIOUS_LINK_LURE indicate that these links are intended to redirect users to harmful content. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it's part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://yafferge.ru/strik?utm_term=how+to+start+instant+pot+duo+nova+pressure+cooker In PDF document text
    • https://cdn.sqhk.co/kusewupudin/b0jcwgj/guide_foil_turning_3d.pdfIn PDF document text
    • http://italywow.pro/41859952723ftyi1.pdfIn PDF document text
    • https://cdn.sqhk.co/jonilinenuvo/zPOggei/download_game_warlords_2_rise_of_demons.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/fiazzia/descargar_whatsapp_plus_gratis_para_android.pdfIn PDF document text
    • http://madamzero.com/xesaxumodezuahvjk.pdfIn PDF document text
    • http://vizit.store/204521816946kzwe.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/KVEgh5u/desisomewuruliken.pdfIn PDF document text
    • http://securitycheckingbrowservkcom.xyz/lomawixatigetinixegita3zngp.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/gedexim/las_jerarquas_de_valores_de_alejandro_korn_max_scheler_y_maslow.pdfIn PDF document text
    • https://d52369c8-37f2-40d9-9d5f-d682b3b4a2e4.filesusr.com/ugd/6d5a7b_d98acda39f8745b0b69df214f66886d1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/minubapurofusupirin.pdfIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_b2b40a91fad24abb9358423db4533996.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/how_to_get_thinkorswim.pdfIn PDF document text
    • https://b304dada-1952-41b2-af44-d16a3232bb3f.filesusr.com/ugd/c19c34_bb7160bb640641cf9ff9f864d6e2ffb4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pujirageg/nuvonoxuvin.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/1438624776.pdfIn PDF document text
    • https://s3.amazonaws.com/dikobepibelun/best_satellite_finder_app_for_iphone.pdfIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_e974c0aed42a41528b7ce5b2b6c71107.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mefovu/rasixifarugarumezedubikor.pdfIn PDF document text
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_49e5a7b374b74b138996b576276b0bab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/divexikav/lancashire_police_incident_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/batman_vs_superman_comics_free_download.pdfIn PDF document text
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_f3dcdfebb49a40c2934e7b8b50dd37a0.pdf?index=trueIn 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_off00012c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C27 5212 bytes
SHA-256: da9e276fa55a6650574d4fcbab92977b70a9df6a5af59c7afbbc310213261a40
font_01_sfnt_off00013e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E06 12608 bytes
SHA-256: eb3a173d883c6066544c5eed51c7b280e0f5957bb504b090346b224e61a8160b

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