Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54a3da991bb39a0…

MALICIOUS

PDF

72.6 KB Created: 2020-12-28 01:11:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7192a7c001f18355ba4375d55fced952 SHA-1: 16decd84b068aa2482c97db49bf43fc272652259 SHA-256: c54a3da991bb39a09e8eb5e1f510e4ac6ceefe222538b18bd77f37dcd7ee2ade
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan threat. It contains an external URI pointing to 'traffking.ru', likely a malicious redirection service. The document body, though heavily obfuscated, contains language suggesting urgency, consistent with phishing lures. No scripts were extracted from this sample, but the presence of external URLs and the ML/ClamAV detections strongly suggest it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/strik?utm_term=movistar+mexico+prepago+ilimitado
    • https://wojawodexof.weebly.com/uploads/1/3/4/6/134673733/saxifo_lomexuxule_durapeni.pdf
    • https://cdn.sqhk.co/jegisizozul/b8Ijajc/anime_live_wallpaper_app_store.pdf
    • https://cdn.sqhk.co/rejibebadit/jfighj5/bosafitelebonavepitu.pdf
    • https://cdn.sqhk.co/vuxevabuvix/iilhhgi/gmail_app_android_change_font_size.pdf
    • https://cdn.sqhk.co/lisesemafo/f0heijl/tisaso.pdf
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/nupovukabaxikutuviv.pdf
    • https://cdn.sqhk.co/vegubefeno/dt3Uhhd/benji_bananas_adventures_apk.pdf
    • https://cdn.sqhk.co/kuruwoke/ihYifOI/knight_awakening_guide_maplestory_2.pdf
    • https://cdn.sqhk.co/dakuwuwuzije/ifijjjV/auto_reply_text_message_whatsapp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1f531c03-8e94-411c-a61f-2e0b2869adf6/35751235499.pdf
    • https://uploads.strikinglycdn.com/files/84ffc332-84e1-47a9-bb7d-56548e6e09b7/lake_county_sheriff_tax_sale.pdf
    • https://uploads.strikinglycdn.com/files/18037a43-31ab-4d6b-9e1a-bc1c04284e6e/elettrotecnica_dispense.pdf
    • https://uploads.strikinglycdn.com/files/320dc740-b36d-4390-b8ce-f4f8c9986c1b/60293336934.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc18.bin
5b7d7b7fa1bb07ab0fa4cc6629673326b039a0335c0e69d01742588cb701717c
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC18 5524 bytes
font_01_sfnt_off0000eee2.bin
f72dea3ce7b6e95cc87d39243fec9223b862d26086352345f5feece24a025c8c
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE2 11452 bytes