Malicious PDF — malware analysis report

Static analysis result for SHA-256 245eb4f8c6bd247d…

MALICIOUS

PDF

81.9 KB Created: 2021-03-17 17:46:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0f5c0b051317270fa42e3750967ab055 SHA-1: df48a69983c47c0050953687134e474472362b3a SHA-256: 245eb4f8c6bd247d0c70bd3d081e7cf966930cd2e49a5a6e912177bdcd7524a1
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=airtel+broadband++and+upload+speed PDF link annotation
    • http://obmenkalnr.online/12119636481ycowl.pdfIn PDF document text
    • http://raifaisentapp.online/secrets_to_drawing_realistic_faceslxfbw.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/ISidAfw/fofusi.pdfIn PDF document text
    • http://realwockyc.info/21084561882bfwp2.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/cgfEvhd/leg_spin_bowling_masterclass.pdfIn PDF document text
    • http://helpforteam.com/ligidosovigft0hu.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/blessed_assurance_hymn.pdfIn PDF document text
    • http://connexion-amelii.xyz/how_to_tell_the_difference_between_latin_and_greek_rootsy07qe.pdfIn PDF document text
    • http://thecet.xyz/34049749143b6jwx.pdfIn PDF document text
    • http://betmoy56.com/78228971476f7lwk.pdfIn PDF document text
    • http://espaceabone.com/94065918340hf5i9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_13d555432eb3446e87a07822884b59b4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/81577796130.pdfIn PDF document text
    • http://jabejanaboz.atwebpages.com/10581502854.pdfIn PDF document text
    • https://0306adf0-382e-42f1-903d-71c3961c97f1.filesusr.com/ugd/7ff653_a5420c3b616f4e32abbe59923ee4baff.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pomaxa/25043422381.pdfIn PDF document text
    • https://c8f6a2ed-bc8a-4fd4-b26a-19707db7c4cd.filesusr.com/ugd/1cc7e8_0848d5cf9e954bfead8dde8753183916.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/english_grammar_worksheets_common_and_proper_nouns.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/55146994715.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/xazuluxo.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_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 5080 bytes
SHA-256: fc4bfe6b2980fd4443d53abd56451ece7aa5813e3105f8980eba58a47b8f2588
font_01_sfnt_off000113ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EF 11280 bytes
SHA-256: e60ebd97d6e90482ad7777ba6339f36a0d89ba1c9e10a62694c7d2615c10178b

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