Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d2088c595dd95d…

MALICIOUS

PDF

69.8 KB Created: 2020-11-23 22:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ce8d9692aef58d5aad709822d80dce76 SHA-1: dbf15b6f5834c1a193d73a777dc9fc91a47d2917 SHA-256: 83d2088c595dd95dadf030fe3b7c50359470ad971dcd38b2ebccfa1560fb8ef2
116 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 a callback-phone (TOAD) 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 0.9893

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafftec.ru/strik?utm_term=ncsoft+create+account PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465127/normal_5fad67c70d676.pdfIn PDF document text
    • https://gajokemijibefe.weebly.com/uploads/1/3/4/4/134467094/7032860.pdfIn PDF document text
    • https://pumutetigowon.weebly.com/uploads/1/3/4/6/134699291/4943344.pdfIn PDF document text
    • https://sowameneritela.weebly.com/uploads/1/3/0/7/130775755/f148af38ea10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_5fb2d35c9dc40.pdfIn PDF document text
    • https://nategenuniko.weebly.com/uploads/1/3/4/7/134749174/jitikeja-pemabo.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/xanebavifamopez/xijinutulusuzisafikela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07ebffa5-fde3-4df5-999b-d151464d7786/83537038879.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA48 3832 bytes
SHA-256: bef469adb78b612456160046e5de55fce243ac68d4164e0dc20ae968a422a927
font_01_sfnt_off0000c811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC811 4812 bytes
SHA-256: aee70cea27c489f2bdd09a257293aeee21ce1cf92bbf78c27453b7b3332ccde1
font_02_sfnt_off0000d881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD881 16228 bytes
SHA-256: 5c7b4b658785fb483e2f0be9c39933f9694f71586e81a1f4c4da13908a84cc11