Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce7da98d20f6f67…

MALICIOUS

PDF

84.9 KB Created: 2021-03-29 06:49:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 39b1c92a656170c2d16621706d981d63 SHA-1: 56784a5b157d5eecd0774a6fa7f36b0e937d6779 SHA-256: 4ce7da98d20f6f67d23978f937970f61874e77eae8cafcba89b1c7e32675173a
96 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. 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 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/123?utm_term=amsterdam+travel+guide+app PDF link annotation
    • https://cdn.sqhk.co/ditetijesi/viahfhf/89078981999.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/mitsubishi_mr_slim_smart_thermostat.pdfIn PDF document text
    • http://janorewaxeno.mygamesonline.org/how_to_know_if_my_car_is_running_rich_or_lean.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/TejiBjh/usa_ice_hockey_game_schedule.pdfIn PDF document text
    • http://jukejed.mypressonline.com/62101255989.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/sezikebefezim.pdfIn PDF document text
    • http://xibesofene.22web.org/13629550801.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/tokudapele/segogemotakisetajofimulew.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/38916149426.pdfIn PDF document text
    • https://ba85394b-11ac-4ca4-926b-74ca936c52e1.filesusr.com/ugd/5ccfc8_c4d18adcf28e40969e0739d803326a23.pdf?index=trueIn PDF document text
    • http://viwekamopib.rf.gd/japujemeferojosulele.pdfIn PDF document text
    • https://b3d988c2-7a7d-4c3c-9141-221b6550481e.filesusr.com/ugd/9dda13_e5b81bd443e14f3bb0c8191c47031723.pdf?index=trueIn PDF document text
    • http://dubanexotokegel.myartsonline.com/go_with_microsoft_office_2020_volume_1_download.pdfIn PDF document text
    • http://zezinoretebeper.rf.gd/kgb_archiver_2._0_free.pdfIn PDF document text
    • http://keberefan.rf.gd/brideshead_revisited_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/android_studio_gitignore_location.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/antrag_kindergeld_berlin.pdfIn PDF document text
    • https://8d275f60-8e36-4e70-8574-b6d542a617c4.filesusr.com/ugd/dbf6c2_57ead9bcc4684befac8f307a028f3e8a.pdf?index=trueIn PDF document text
    • https://0e627107-309b-4451-a84d-e7064c41fccd.filesusr.com/ugd/04c368_6817497619c2441586ea07c6b6976e1e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/polexebuj/85338798644.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f718.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF718 5328 bytes
SHA-256: cf57faf2ae8b6afa2bfdc000c2061a13109054b04f12111694629e97f347b4c1
font_01_sfnt_off00010928.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10928 11588 bytes
SHA-256: 74112fbfccf476b671d05600e96c42c0a243a9fbf93e058969f6749629805632
font_02_sfnt_off000130c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C0 16168 bytes
SHA-256: dcc437beaabc532c244cb2402c7e187dabb6fccd34af89cd9e2270a2a4498d3d

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