Malicious PDF — malware analysis report

Static analysis result for SHA-256 6360c4af480b1dc2…

MALICIOUS

PDF

124.8 KB Created: 2021-04-23 00:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 88f3777d1ce7f468c44d1acb02354b92 SHA-1: 2cf88287567cb4a00237d5d83e8570f74a7af8bb SHA-256: 6360c4af480b1dc26a73a15011feb6ffb9b48546b10d6bca351721f300b42761
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a legitimate manual, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing. While no scripts were directly extracted, the PDF structure and embedded URI are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://baarspo.ru/strik?utm_term=danby+ddw1899wp-1+portable+dishwasher+manual PDF link annotation
    • http://saratov.ooo/54242673525wxwgl.pdfIn PDF document text
    • https://cdn.sqhk.co/josedinis/jKUhcIu/ejemplos_de_analogias_verbales.pdfIn PDF document text
    • http://fevinoreniwelik.sportsontheweb.net/the_wifes_lament_ann_stanford_analysis.pdfIn PDF document text
    • https://cdn.sqhk.co/zokirafuka/ijgUtjf/autobots_in_transformers_movies.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/g3ibja1/bipudusimafazedugofujini.pdfIn PDF document text
    • http://consequences.space/240953264mth3p.pdfIn PDF document text
    • http://antileqphh.site/towolenowarujosusojisototzrbn9.pdfIn PDF document text
    • http://ipatovaalena.ru/57231876346zysld.pdfIn PDF document text
    • http://lipenav.mypressonline.com/properties_of_2d_shapes.pdfIn PDF document text
    • http://jabudapitu.scienceontheweb.net/97774576376.pdfIn PDF document text
    • http://melowimaz.getenjoyment.net/flowers_for_algernon_quizzes.pdfIn PDF document text
    • http://idealslimitaly.site/150514050273964z.pdfIn PDF document text
    • https://cdn.sqhk.co/xifinelire/DZbhjjo/73734949668.pdfIn PDF document text
    • http://buxewufa.iblogger.org/jilanuserenu.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/nitajosasa/can_i_use_normal_sd_card_for_ps_vita.pdfIn PDF document text
    • http://magotabitujotu.rf.gd/kazuwisowifivudide.pdfIn PDF document text
    • http://salalew.epizy.com/arthritis_research_uk_tennis_elbow.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/5305649355.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/lasojevowobotawog.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/35793555791.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/free_powerpoint_templates_for_macbook.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/capture_one_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/91366151474.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_off0001a66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A66F 5964 bytes
SHA-256: d464e109edfe8934c222a4a96cf32d67e0c0e886716f4ad52afdcf267f1ca715
font_01_sfnt_off0001bab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BAB1 12036 bytes
SHA-256: 143a499ded4fc3a4ae6f0509d8f2f701e94ef475111bc895265f9999fefb8ef0

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