Malicious PDF — malware analysis report

Static analysis result for SHA-256 69b31eb707afc3c1…

MALICIOUS

PDF

71.6 KB Created: 2020-11-13 01:54:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5cf208ff5b8d570e71a1b7a4f72a9dd6 SHA-1: d54211a0d6d5c5bc557a05b9dc91bde828d37d49 SHA-256: 69b31eb707afc3c1d1c05905926e68632350710bb48f098b4026fcba19b05347
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a fake-CAPTCHA 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 0.9997

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
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://traffnew.ru/strik?utm_term=gta+5+money+generator+no+verification+xbox+one PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368501/normal_5f94afcd728de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f875d86aa3eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba59304b-c1d7-49f0-bfbc-ca05daaf6234/92700586170.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/calcium_channel_blockers_mechanism_of_action.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cbb2723-0e8a-4fc3-87eb-2c4c809f4bf6/97052214890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28de6049-70d3-42c3-9086-019f8b18a520/2121539979.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/pdf_file_example_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/customs_declaration_form_philippines_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/160a9de6-2249-4eb7-aed1-e328dd6d3cbc/guwovidajegedebu.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/uc_davis_web_scheduler.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/42135946091.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/volepik.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF6 5516 bytes
SHA-256: c66191a26c989eaa7c091fc1048dd251ea55488e450985c6cac5b1479ceae31a
font_01_sfnt_off0000e0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C3 2092 bytes
SHA-256: 13678a14b930e6d42e11b2ac41b13981c2c7f5938cc30cfb194ad51886f1f1dd
font_02_sfnt_off0000ea68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA68 11244 bytes
SHA-256: 4088de1fdf9920e5ab92c0547fbb4dc9382b6bdfaaa6582a165cf6eabfb95f32

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