Malicious PDF — malware analysis report

Static analysis result for SHA-256 586902fbdcb99f3b…

MALICIOUS

PDF

70.9 KB Created: 2020-12-07 15:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 0d20cdd61bb0fc644f898d2cfdc8cbf0 SHA-1: cb148f590dbd0b557f8f659db5b99068bbbaa7d7 SHA-256: 586902fbdcb99f3b4278c612df445a0da0a95e013da75736845c90490f6c4fb7
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous links to external websites, masquerading as a document about cetoconazole and betamethasone. The primary malicious link, 'https://ggtraff.ru/aws?utm_term=cetoconazol+betametasona+bula+pdf', redirects to a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/aws?utm_term=cetoconazol+betametasona+bula+pdf In PDF document text
    • https://fumubesoxumus.weebly.com/uploads/1/3/4/4/134485348/sowipuf_semubaj_muroxis.pdfIn PDF document text
    • https://xesupolapiban.weebly.com/uploads/1/3/4/5/134586318/tubom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a72f25c6-dede-4b0b-b454-b9b60adeba35/walabulemegu.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/14544248977.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/adobe_scan_scanner_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b992238-88d2-4cad-b660-7e65d40c6078/dragon_ball_xenoverse_2_super_saiyan.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/metojutuzokasovuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c291eb9f-f179-435f-96fe-426d5600258a/xobupuxubofitop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b8cf5b-482e-47ec-9767-3d8ee8657d72/building_foundations_of_scientific_understanding_volume_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c63fb31a-fa1a-4ad9-8094-00f7b992da88/guxitigedupop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dafb60f6-de29-42cd-813f-9235b1f1872d/luvabodejitamelagi.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_off0000d7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AE 5300 bytes
SHA-256: 59a141c6924c43ffaa8ff3b4205e698ae9e8f16ad92e8022a1762c9e5b042e79
font_01_sfnt_off0000e9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A6 11280 bytes
SHA-256: 53a77d7e54cada2a4b6eb68cea6e6b2d22ddf7a24b68e536775bf8a037610445

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