Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac95cd0573be9274…

MALICIOUS

PDF

87.0 KB Created: 2021-02-09 11:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 236b66411a8cbc4fa888e9863164fe7c SHA-1: fdcaa8ef82b4b27fa3f9d84bf57c4dae8a1e4569 SHA-256: ac95cd0573be92748949a4e9306899a0b4848b6f2254ffbb5660c77e00f87e1a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, 'bologen.ru', which is likely used to host malicious content or facilitate phishing. The PDF structure itself does not contain readable content, but the presence of the external URI is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/aws?utm_term=deniece+williams+silly+sheet+music PDF link annotation
    • https://cdn.sqhk.co/xogixute/Eiahf21/36656557315.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/bicgdhh/54918754047.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://galopaxuvubopuj.rf.gd/osrs_magic_cape_imbued_guide.pdfIn PDF document text
    • http://repuxatifugupi.epizy.com/bgee_map_guide.pdfIn PDF document text
    • http://jiwimid.epizy.com/jisisomovo.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/kudafadup.pdfIn PDF document text
    • http://loxosufodu.epizy.com/how_to_check_chargesheet_online.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/aprire_automaticamente_chrome.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/13029985618.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/8638441718.pdfIn PDF document text
    • http://kiwizenodemi.epizy.com/8149436807.pdfIn PDF document text
    • http://kidojudal.epizy.com/leg_cellulitis_treatment_guidelines.pdfIn PDF document text
    • http://juruzimezez.rf.gd/letter_address_format_nz.pdfIn PDF document text
    • http://favigagiwu.epizy.com/best_antivirus_spyware_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/bangladesh_navy_uniform.pdfIn PDF document text
    • http://setavafajo.epizy.com/6319468232.pdfIn PDF document text
    • https://s3.amazonaws.com/fivebo/70472575671.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/android_emulator_ios_9.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_off000109df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109DF 4908 bytes
SHA-256: bc842a4174bf06fc3ad22e5093de85827ea6d1b537031f30c107f6fd5cc9a433
font_01_sfnt_off00011a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A78 11128 bytes
SHA-256: 62de20bdce6575300fc97dc9bd95ceb2481502df50bd76d6f9241c84b0b9fe30
font_02_sfnt_off0001405d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1405D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.