Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d468c0117a7777…

MALICIOUS

PDF

73.8 KB Created: 2021-03-02 02:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 615607cdf1fd9f32cb4d317db67cdfb0 SHA-1: 905956ac5b88735ada8a3dd373c64211ab90054b SHA-256: 84d468c0117a777727733a27003dd5dadad73e3a07d40197da0016278fb6f45a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URI suggest an attempt to redirect the user to a malicious site, consistent with a phishing attack.

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://baarspo.ru/strik?utm_term=how+to+reduce+anxiety+in+your+cat PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446030/normal_601ee81d2dfbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384628/normal_5ffcf8b7b11dd.pdfIn PDF document text
    • http://itdiscount.pro/how_to_make_a_copper_moonshine_still7889i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444649/normal_5fe0d1bc39783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417999/normal_600c273eb7b61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446029/normal_601fdee99b6fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499656/normal_60279944010d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450870/normal_60114988077aa.pdfIn PDF document text
    • http://pejazadajenatew.getenjoyment.net/is_cyberpower_power_supply_good_enough.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501383/normal_603d6f0e3f8f3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nukilaba.myartsonline.com/how_do_you_install_a_safety_first_car_seat_forward_facing.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/video_perang_belanda_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/78341131521.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/arya_2_movie_in_tamilrockers._cl.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/what_does_child_led_learning_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/gopuxegesiki.pdfIn PDF document text
    • http://mawokale.myartsonline.com/flower_of_life_tattoo_designs.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/27291607025.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/45524303521.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_off0000e47c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47C 4944 bytes
SHA-256: 9338588a8fb90c17c8989c63731108825c0f7cac3cc15f1496ff2272224d366c
font_01_sfnt_off0000f570.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF570 10728 bytes
SHA-256: 0200ab0d6dc3b90b550487d7e336d5ede45aa5e7eb0bc442397cb96f1278cb4c

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