Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cca78ce5e6e071f…

MALICIOUS

PDF

70.2 KB Created: 2021-02-09 10:34:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 034f209dc9cef0a4e0465ecb2df02f4b SHA-1: 929879c4cb9cb8b8ead4be8e9d17916b5894e635 SHA-256: 7cca78ce5e6e071f8c4d28e0cc2ebfd7ee29255dfefd618f03524d4ab0fc63e6
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'Dekton countertops consumer reports' and is associated with an external URI pointing to 'https://bologen.ru/aws?utm_term=dekton+countertops+consumer+reports'. This suggests a phishing or social engineering attack aiming to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=dekton+countertops+consumer+reports PDF link annotation
    • https://cdn.sqhk.co/kojanakif/hhbMSj3/didion_orf_st_james.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzezufe/fhfg4gg/sagopemetafabudixazegix.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/dgh47gj/smashbox_makeup_brushes.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/pzxChf9/rujimudadurutiwalato.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/fQqE1hb/77234294750.pdfIn PDF document text
    • https://cdn.sqhk.co/lifudidu/Rhjic95/rome_barbarian_invasion_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/velomegu/fhcjiib/gugesawufixeraloper.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/ghHTzgc/street_chaser_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/Mthc4jj/game_of_thrones_hd_wallpapers_for_laptop.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/vuliwisuwig/bluestacks_showing_pending.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/guzuluxezazu.pdfIn PDF document text
    • http://zamoguwudegovo.rf.gd/movutonov.pdfIn PDF document text
    • http://gigezevozaf.epizy.com/68790522335.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/ankidroid_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/rurisonef.pdfIn PDF document text
    • http://fuwasal.rf.gd/finding_limits_numerically_worksheet.pdfIn PDF document text
    • http://zafovitunopejus.epizy.com/lomitogigotazu.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/3356946650.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_off0000d724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD724 4900 bytes
SHA-256: 1b1a7eb0304b3aa414d2f30a845ddb0ec8837deeca43c81e82a21a8c0c7bf8f7
font_01_sfnt_off0000e7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C8 10528 bytes
SHA-256: 4b9778096fc88546a8797f93a4f9d6c3663e205d4e704bc97d08fab84e13c45f

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