Malicious PDF — malware analysis report

Static analysis result for SHA-256 be68cffd0b84e5d0…

MALICIOUS

PDF

69.0 KB Created: 2021-02-12 06:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7b73aa4c06647f33e94ac96700142104 SHA-1: 1abc754ad1732a0221fe84b94d933b3ce5f295f2 SHA-256: be68cffd0b84e5d01227fed016b9e037e257279315881f997c85ef6764ffc1be
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=glencoe+health+lesson+quiz+11+answers', which is likely a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users via a malicious link, consistent with spearphishing attachment tactics.

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/wix?keyword=glencoe+health+lesson+quiz+11+answers PDF link annotation
    • http://sfhgfje5df.xyz/rexuwexoxam9qne3.pdfIn PDF document text
    • http://familyit.info/vinifenafuxinogafosiwi8ztsh.pdfIn PDF document text
    • http://chelamela.org/que_es_abrogar_y_derogarhbc9b.pdfIn PDF document text
    • http://circulshtangcalip.website/wukisopaxobivutalw9hma.pdfIn PDF document text
    • http://mikrotikwizard.com/40098220840qt06b.pdfIn PDF document text
    • http://afracheat8.xyz/mhendislik_mekanii_ders_notlar_ita60xi.pdfIn PDF document text
    • https://cdn.sqhk.co/lunexubafexo/ggQKkgg/rozofusulim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zujopafupo.epizy.com/61778296408.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/flight_simulator_mod_apk_latest_version.pdfIn PDF document text
    • http://roramebojasaw.epizy.com/gcf_lcm_worksheet_answer_key_6th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/esr_tb_report.pdfIn PDF document text
    • http://namavorudil.epizy.com/xelewevakerix.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/jiduzekagenabudemim.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/real_survival_battle_royale_squad_mobile_apk.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_off0000d150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD150 5240 bytes
SHA-256: 1500d484ba6c91978f5123ee869203c2f6e98ab782205c2ee8833c1d5385372b
font_01_sfnt_off0000e33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33C 10892 bytes
SHA-256: dd3d3c68dd3b97e79707f17432712bd96a15a3b6ad8a15739fb263a77870ec39