Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1bdffd23cbbcb1…

MALICIOUS

PDF

88.0 KB Created: 2021-05-24 18:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7f730747d3c656d3f8c581892923080e SHA-1: 2795ef90631cf4bd776207074cef1ad8d9950b60 SHA-256: 9e1bdffd23cbbcb1bddee778ae6008b65a7b9a67a4d90f93371e430781fbae71
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a phishing document and a link farm, with one external URI pointing to 'https://botokaw.ru/strik?utm_term=granny+mod+minecraft+1.7+10'. The 'SE_CLICKFIX' heuristic suggests the document attempts to trick the user into running a command, a common social engineering tactic. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://botokaw.ru/strik?utm_term=granny+mod+minecraft+1.7+10 PDF link annotation
    • https://figidurilope.weebly.com/uploads/1/3/1/4/131452961/ferojatimop-xuxif.pdfIn PDF document text
    • https://pejegenipejixe.weebly.com/uploads/1/3/4/8/134848799/pepanabip_joxamatenu_lizoxib_bizaxup.pdfIn PDF document text
    • https://fimezerix.weebly.com/uploads/1/3/4/4/134478386/bigune_fakudovenorojes_tijavenelapuna_lexosunatapif.pdfIn PDF document text
    • https://xijexarara.weebly.com/uploads/1/3/4/0/134017378/66dcfcc06257a.pdfIn PDF document text
    • https://midejewafefo.weebly.com/uploads/1/3/4/0/134000268/f6577a344274.pdfIn PDF document text
    • https://tarakemutelomul.weebly.com/uploads/1/3/2/3/132303353/196d9ec.pdfIn PDF document text
    • https://renokiva.weebly.com/uploads/1/3/4/3/134353994/segag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazatuv/86937078326.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/nepabomudeturasivosutoz.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/instagram_app_for_android_free_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/hornady_208gr_subsonic_300_blackout_load_data.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/vivimezupenupokolafaw.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/dukobevepalofusejawajiwik.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/sample_spm_english_paper_2.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/accp_coumadin_dosing_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/mobivifiwasi.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_off00011a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5A 5396 bytes
SHA-256: 653f7b9c0460447aa59d210ecd3a607a806ca185badcd8cbf235e7a6646ab3ef
font_01_sfnt_off00012cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC0 11004 bytes
SHA-256: 773f56e6dd787fa7b735aa9968647facab30292512159b3129f704fecb7c6594

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