Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b303faaf9b26666…

MALICIOUS

PDF

70.8 KB Created: 2020-12-17 03:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c5a3c30a3e0f930385dae6159d388fb1 SHA-1: 620f5501fe91795ff76a3fe294c2c2ed1fc85d31 SHA-256: 8b303faaf9b26666db4d912ff5189963edc1700424cfb9babaf521999ef0b726
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://trafficel.ru/strik?utm_term=avr+studio+arduino PDF link annotation
    • https://nirilixurem.weebly.com/uploads/1/3/4/4/134474770/sexavodezuxizon.pdfIn PDF document text
    • https://paxobafu.weebly.com/uploads/1/3/4/6/134697986/perofatavimomax.pdfIn PDF document text
    • https://rawixokuboja.weebly.com/uploads/1/3/4/0/134097397/wewesi-duwuvexasubifaw.pdfIn PDF document text
    • https://bejelasinodajib.weebly.com/uploads/1/3/4/7/134764461/c6231080a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc38de88787e879897caab0/t/5fcde83fc00f007cea0b446c/1607329856205/kirivufufizegexe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc392926b97992eb56ca04e/t/5fc644a8eaf37e3b64713f4f/1606829233708/50365871074.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be1e7503-ebf2-4edc-be3a-3261d430ce43/25706358937.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b945226-f870-4be9-b49a-62a03edcfa06/lejugopovavetebeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17caa0d2-127b-4390-a0d4-427a0ee73ebd/74476689523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42396bc8-9a69-470a-b13c-1e174b702e62/quadrilateral_word_problems_worksheets.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53b4dd49dd1244750b521/t/5fc8345813f8d93bf2fbfc40/1606956121555/survival_skills_booklet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b424c98-a6f9-40d9-b7cf-81c8e085e686/85790482035.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79de6aa0dc1643a3271d4/t/5fcedd1a7c363627419fa5a2/1607392539497/digital_marketing_strategy_template_2020.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_off0000cc76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC76 4836 bytes
SHA-256: b515d4d2fa6dd4587db63cdf055ffbf66ac74148fb04a81531e479f88ef117ba
font_01_sfnt_off0000dcf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF3 2952 bytes
SHA-256: 7f8460c56aa6ff05e741007ea6b7d901cc105d6097ad7a61a9b39e9962ff549a
font_02_sfnt_off0000e8b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B6 10948 bytes
SHA-256: c191ebf8b719b6bae2eeb809529bb3c47b0ffb0f4f9c39fcf19cfa8e55441794

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