Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cedda95e03a465e…

MALICIOUS

PDF

85.8 KB Created: 2021-03-05 01:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9ae285dd78580375eef08d12af4d04ec SHA-1: f741dee3cc7ae5f831ded8609f2fc169b327fdcd SHA-256: 7cedda95e03a465e2b82d451a821bc711a160ef5f6f93fcf5690bba02e93da91
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading software. While no scripts were directly extracted, the presence of external URIs and the nature of the detection suggest an attempt to redirect the user to a malicious download site, likely as part of a phishing campaign.

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/wix?keyword=kinguser+apk+latest+version PDF link annotation
    • http://gexomafe.mypressonline.com/46812758805.pdfIn PDF document text
    • http://opendouche.xyz/misinofufovepunelitakuw3.pdfIn PDF document text
    • http://fbdirect.site/fegofemuxiwen7yksu.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/noam_chomsky_language_theory_summary.pdfIn PDF document text
    • http://gexopidikimo.mygamesonline.org/97343516223.pdfIn PDF document text
    • http://pek-24.cc/easy_disney_piano_sheet_music41gk8.pdfIn PDF document text
    • http://domen3.club/definition_of_the_american_dream2w6yo.pdfIn PDF document text
    • http://pressit.fun/9706417575882lo6.pdfIn PDF document text
    • http://photoforce.ru/moores_clinical_anatomy_free_downloadwhbou.pdfIn PDF document text
    • http://femuxeririta.mygamesonline.org/pinuwe.pdfIn PDF document text
    • http://mikazuxo.mypressonline.com/oracle_sql_date_functions_month.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/kerbal_space_program_control_surfaces_inverted.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/crib_flat_sheet_measurements.pdfIn PDF document text
    • http://baxewape.myartsonline.com/resistance_band_exercises_for_thigh_gap.pdfIn PDF document text
    • http://rosevasejila.myartsonline.com/nomivabid.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/88546241424.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/toxuzilok.pdfIn PDF document text
    • https://s3.amazonaws.com/bejexe/amazing_adventure_game.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/46418817469.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/xakuwajaxawizeximux.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB37 5080 bytes
SHA-256: 22c73b68b52e78f973bf5f5c2d402f5f7a5e623d03ed670b8068e90a88d8e9d6
font_01_sfnt_off0000fc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC97 11768 bytes
SHA-256: 774332fa520af6d746c5eec361c0e161532e534b96afaffd597944e291648e7a
font_02_sfnt_off00011d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D1A 14064 bytes
SHA-256: feae91055928cbdc9ba98f0e0becd4fe7da6d3a4953af746da677075c597ae58

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