Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbfa02b078e9beb7…

MALICIOUS

PDF

82.2 KB Created: 2021-04-25 02:41:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 863cc474bf466d9dc5d1bb553d7f255f SHA-1: 95ef0ab2fccf2cd9198105378bf893c1ca5bc564 SHA-256: bbfa02b078e9beb7215ba11448e19e4ff29494941c34670a0902736a7fb0af61
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a social engineering tactic.

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://jottigo.ru/strik?utm_term=what+is+a+cultural+movement+mean PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392207/normal_60013ba19021c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445118/normal_602caef46ec59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502188/normal_603dfcd2cdf66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gulogomolu.rf.gd/24713636017.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/rotekafolofuxarawojigo.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/fosutizuzigikixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84f85062-7d77-44df-8f62-9e6a3a6e9964/xadojofijalogu.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/sivaravosajujo.pdfIn PDF document text
    • http://kisiluban.rf.gd/10379150500.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/frostgrave_wizard_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/inverse_functions_identifying_pairs_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/zumumisimigiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bba2fcb-a514-4fbb-8120-3f0ee170c4eb/xugoxanelivesinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b8d4d59-731e-493a-a9f8-32d18554a58d/dikurupegire.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/jadojipoxezawu.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/what_does_mecha_mean_in_gaming.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 4992 bytes
SHA-256: 120fc91225249dad1054cefe4a2b2266ddab62b66d6b6a3107f48062d7adfded
font_01_sfnt_off00010992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10992 10432 bytes
SHA-256: 4ab332ec7ff5f9e2c0fb3f616ec9b08e83019f82b60e6b6c3d49aef4d167535a
font_02_sfnt_off00012d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D5D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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