Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20558b70ea35c14…

MALICIOUS

PDF

75.3 KB Created: 2021-02-23 22:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a70cb548a2259596ceea4cc638148091 SHA-1: 51ad5b818db6df0dd7be966ef9e9723b7e14125c SHA-256: e20558b70ea35c14aea119aef4b224bab9164d19c8616b45b3ebbf60a126e279
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 0.9998

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://crophysi.ru/strik?utm_term=matilda+buch+roald+dahl+summary PDF link annotation
    • http://nicechange.space/world_warfare_pc69dkv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444866/normal_5ffbb7bb1979d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456686/normal_5ffa5bd076817.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393632/normal_6023b81a78e74.pdfIn PDF document text
    • http://1fps.ru/business_basics_students_booktr3hl.pdfIn PDF document text
    • http://onenature.space/bger_om_svineopdrtwj3jw.pdfIn PDF document text
    • http://ketotreno.buzz/78282868814k0gud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422893/normal_5fdd3df1f26a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_600da4422ad75.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/jupudizadid/credit_analyst_resume_format.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/critical_ops_fly_hack_android.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/76414904601.pdfIn PDF document text
    • https://s3.amazonaws.com/xijilesuzuxo/10311639442.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/downers_grove_north_high_school_report_card.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/urgent_hypertension_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/20818599113.pdfIn PDF document text
    • http://raguguk.epizy.com/how_much_money_does_the_average_amway_distributor_make.pdfIn PDF document text
    • https://s3.amazonaws.com/liluvad/52305895868.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/88455842848.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_off0000e6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FB 5428 bytes
SHA-256: 05d1cc8ee3fd1a47574362293ad7d1b8b81d8926b68cbf1fc434d62c3acdb697
font_01_sfnt_off0000f94d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF94D 11400 bytes
SHA-256: 7b55d1fb17b5c847320e8d8116b97402d6b2f332f530c83e3ab943402b311fb0

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