Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41d67f9c5b62809…

MALICIOUS

PDF

70.0 KB Created: 2020-12-24 11:52:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1dee2d0be1d4375b9348353265e5426 SHA-1: d5bec157eeb3691083e47228b401b9e728c71ccc SHA-256: c41d67f9c5b62809d0ab407a2b8635df0b53e2d265cbca3d974e0fe38ba58517
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though partially corrupted, references "Recargas dobles a cuba 2020", suggesting a lure related to telecommunications or financial services.

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://trafffe.ru/strik?utm_term=recargas+dobles+a+cuba+2020
    • https://cdn.sqhk.co/gigemuji/ejviioF/bunny_follow_and_like_for_tiktok_mod_apk.pdf
    • https://zafitageleg.weebly.com/uploads/1/3/4/4/134489703/5838245.pdf
    • https://pamukisap.weebly.com/uploads/1/3/4/7/134761215/f836dbb.pdf
    • https://ginuwedisifixel.weebly.com/uploads/1/3/4/7/134744372/72f09bd1aaf6d.pdf
    • https://fijisakotapabe.weebly.com/uploads/1/3/4/0/134013267/9187740e6.pdf
    • https://cdn.sqhk.co/wopidaxiwuk/ojhxjbz/fabojoxiximoxogewodoru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/sitozi/fapobep.pdf
    • https://uploads.strikinglycdn.com/files/9b109f42-7b06-417d-9b28-4ee670ead91e/66906792363.pdf
    • https://uploads.strikinglycdn.com/files/ab3db200-3e9b-498e-9779-7e1811669e9f/waporefasuxofawalikad.pdf
    • https://s3.amazonaws.com/domegagowevag/mailchimp_html_email_template.pdf
    • https://s3.amazonaws.com/nopomewegobij/informe_de_antecedentes_judiciales_paraguay.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d16e.bin
87cc8d4bcdab43bc95aa76cd46c547de74ab64034671aba30f2aa1959b879153		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD16E 5528 bytes
font_01_sfnt_off0000e447.bin
83fad00cb01b1b5d4cf56f6409d35353d825d5b02201057c910202a62f440b8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 11476 bytes

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