Malicious PDF — malware analysis report

Static analysis result for SHA-256 087ec0fee163b36c…

MALICIOUS

PDF

77.8 KB Created: 2021-02-28 07:29:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 91d83f5fdc645c1637d82adb039f1b99 SHA-1: 6d7e7bac3e3f6024fdd8c33fb3a10d14e1171b18 SHA-256: 087ec0fee163b36c0db8eac563e164b281bac2fd64cc87c586bfb9ef949c0640
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to trick the user into visiting a site offering pirated content. The document body, though heavily obfuscated, contains keywords related to streaming and the URL itself reinforces this phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/award?keyword=handmaid%2527s+tale+watch+free+online+season+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419003/normal_6038339ca75b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_6011b3dfc3c9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382972/normal_5fec56a32c08e.pdfIn PDF document text
    • http://wordsidepost.top/operaciones_con_notacion_cientifica_suma_resta_multiplicacion_y_division6adh0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_6019fe14cb8d2.pdfIn PDF document text
    • http://newberginvestmentproperty.com/70190150726h81kx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494136/normal_5ff7e55304adf.pdfIn PDF document text
    • http://arthromedshop.xyz/kegofasupexox4xg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/brainpop_cellular_respiration_quiz_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/75637983474.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/77546575794.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/distributive_law_questions_and_answers.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_off0000e66b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66B 5188 bytes
SHA-256: 65a930ee4dcdfdc607feaff75be3abb2c4a757ff38d6acb168c8f72f92df28e7
font_01_sfnt_off0000f7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F1 10504 bytes
SHA-256: 68b3181fc5767710a1d29ff6162f01c29ddc4cd6d7a8c4a457c5f462e67e054b
font_02_sfnt_off00011bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f