Malicious PDF — malware analysis report

Static analysis result for SHA-256 c525fb9868301bb5…

MALICIOUS

PDF

66.7 KB Created: 2020-11-25 05:57:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 427103a84951a4b4c8135937600baed6 SHA-1: 9c22552592935a846332b692df33214940b3c4dd SHA-256: c525fb9868301bb59294594373ab68805b7eb25cc32bba06144111043d29c867
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/aws?utm_term=mazda+3+android+auto+not+working PDF link annotation
    • https://xotiroxo.weebly.com/uploads/1/3/0/7/130776105/3105143.pdfIn PDF document text
    • https://sigakoge.weebly.com/uploads/1/3/4/4/134437147/2379116.pdfIn PDF document text
    • https://zafimalomaw.weebly.com/uploads/1/3/4/4/134458932/8971474.pdfIn PDF document text
    • https://kexoxuneve.weebly.com/uploads/1/3/4/5/134501441/bolutupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426080/normal_5fa0ae6fecd95.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/sajatesawodiji/cnbc_halftime_report_contributors.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76f37af1-6ba6-4afc-a96b-d903c4023027/ttm_meaning_slang.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/arduino_mega_2560_pcb_layout.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/sufovaxukitokil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed87cf0-a702-440c-b60a-da2eefdc8102/sifupizijim.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/jowofunoselifedavapibakig.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/45570025697.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_off0000c753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC753 5160 bytes
SHA-256: 9f4d413d9a3928575136536994b52118e5cc23a1b5a6c4ba0473037512aac8c7
font_01_sfnt_off0000d91d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91D 10348 bytes
SHA-256: 8f8c427ddf9fba47e18d4a90bfd1a2990c1dfefe803340f41fc4df782f840311