Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6856fe7ebf03db6…

MALICIOUS

PDF

76.8 KB Created: 2021-03-03 02:37:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: bbd0139bafc8152c3346bc2cc9ec4fe5 SHA-1: a13a93468cb4cade8db5592a756097233f3593ac SHA-256: e6856fe7ebf03db659f9784b5f11f55294ba8782fb91b036a52ca81882da996e
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by heuristics as an external URI and an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of an external URI suggests an attempt to redirect the user to a malicious site, likely for phishing or further malware delivery.

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://seumenha.ru/wix?keyword=anime+harry+potter+coloring+pages PDF link annotation
    • https://cdn.sqhk.co/jenireni/BhcSqii/ben_10_up_to_speed_game_download_uptodown.pdfIn PDF document text
    • http://update-win20.online/waxogaxiwidufek5er0m.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/jsgcghe/ledomonagosolamanel.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/YiahHgh/lapegorofujiv.pdfIn PDF document text
    • http://rating-bookmaker.ru/royal_children_s_hospital_guidelines_bronchiolitishnult.pdfIn PDF document text
    • http://tophomework.space/joey_gladstone_cut_it_out_memeaq2ek.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/hbgjIjg/45548984127.pdfIn PDF document text
    • https://cdn.sqhk.co/leredupodeka/MichbGZ/55857638597.pdfIn PDF document text
    • http://idealicaufficiale.website/nombres_de_selva_scouts_manada7pyyd.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/ujfihiN/93855414965.pdfIn PDF document text
    • https://cdn.sqhk.co/xuluriwu/ihajboW/miro_aew_twitter.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/dosalapasenow/dimuzedavoruwirewuxowup.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/tegesuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/escanaba_weather_report.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/91653371340.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/ruptura_de_aneurisma_cerebral.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/ipad_mini_5_wifi_5th_gen_64gb.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/bollywood_music_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/fuwepabiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/office_supply_requisition_form_template_excel.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_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 5440 bytes
SHA-256: 9c8161aa5bb6fde0a592bd8ad510f42b9fcea587a876936ba26de9811155402f
font_01_sfnt_off0001012e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1012E 10604 bytes
SHA-256: 29e38a77cab91cfe40a2102dbd194dcb36af633315b65b2282c6bd454c160518

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