Malicious PDF — malware analysis report

Static analysis result for SHA-256 0942f6bafa5e3595…

MALICIOUS

PDF

110.7 KB Created: 2021-03-24 03:58:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 367601b70e174ac69788bc3a80ee86c9 SHA-1: eda90f9fb5e1a033379c7247f25937063cec9bff SHA-256: 0942f6bafa5e3595f890603f6a2aa79b4c8d58697ea3301429cda678685b0a15
134 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with several pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment, likely leading to a malicious website or payload download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://golowaki.ru/award?keyword=automobile+safety+system+pdf PDF link annotation
    • http://fawikenaxalu.scienceontheweb.net/54667491342.pdfIn PDF document text
    • https://tibegoruk.weebly.com/uploads/1/3/4/8/134862976/xabulubupud.pdfIn PDF document text
    • http://nebofimanigi.sportsontheweb.net/the_5_love_languages_book_australia.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/zexesaziwamavaliporu.pdfIn PDF document text
    • http://nujagexurej.medianewsonline.com/xigalinigobujumug.pdfIn PDF document text
    • https://bosewumakujo.weebly.com/uploads/1/3/6/0/136036310/2723091.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/9103860.pdfIn PDF document text
    • http://fegiroxopirez.sportsontheweb.net/cdna_cloning.pdfIn PDF document text
    • https://memelixuluxowi.weebly.com/uploads/1/3/5/9/135958522/mudewilalu.pdfIn PDF document text
    • http://nosilekexiwot.mywebcommunity.org/c_est_quoi_l_orthophonie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sawesupunozigiv.atwebpages.com/nurovuzetuguxeruza.pdfIn PDF document text
    • http://givetupazowo.onlinewebshop.net/lipimelivematurasafudari.pdfIn PDF document text
    • http://doxokalisawe.myartsonline.com/ipega_controller_android_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/245bb5f8-85fd-4f27-9afa-b858af38c9ea/mr_coffee_maker_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/civil_engineering_technical_report.pdfIn PDF document text
    • http://zedofaxuboz.onlinewebshop.net/behold_our_god_lyrics_and_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2423af5e-f46b-4d02-8bc2-019f0b5e3db5/will_stock_market_crash_in_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/sukegegabalezoxigun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a1d6635-eba3-47e5-a8bf-1aa449cb8501/20388818028.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_off00017227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17227 5320 bytes
SHA-256: 7dd28f0262001cdc1c8f214a71fa92c1adb05240b84d6d559e58e254de126553
font_01_sfnt_off00018439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18439 12168 bytes
SHA-256: d20b83f77eb707d5dd75b44b290ee0f4bf36a2edf6053f37b2d49277a83aed25

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