Malicious PDF — malware analysis report

Static analysis result for SHA-256 82547b1f903db83f…

MALICIOUS

PDF

92.1 KB Created: 2021-01-15 05:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e2a8360ef4d6b1ca72cf6d23c6800a6d SHA-1: da7faf430f3c4b62f69e92a55e892f13b24bc873 SHA-256: 82547b1f903db83feb4582fb9d08d482fc0d56dd4e3675ced87a2bbcf1573129
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-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://traffnew.ru/aws?utm_term=psc+result+2018+marksheet+bangla PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417997/normal_5fa5d0ef2f0df.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/idgih6n/build_a_tower_defense_game_with_phaser_3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374360/normal_5feafdffcbd48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484834/normal_5fa809a3b5ff1.pdfIn PDF document text
    • https://rofasaxoropop.weebly.com/uploads/1/3/5/3/135316675/vuvad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454556/normal_5fcb533c9174a.pdfIn PDF document text
    • https://cdn.sqhk.co/rasufizo/kAgjnhd/planet_warming_topic_of_concern.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_5fcb6737f2829.pdfIn PDF document text
    • https://cdn.sqhk.co/gisusisabez/fqHjdid/5559042189.pdfIn PDF document text
    • https://mebitulipavore.weebly.com/uploads/1/3/4/3/134339985/4458733.pdfIn PDF document text
    • https://vosuwuzede.weebly.com/uploads/1/3/4/7/134743003/binozimoguwe.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/zonebon/materi_akuntansi_biaya_1.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/pudozujax.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BEC 5940 bytes
SHA-256: b2c3866c273dd2e54915453ea334c414cbf3bfe21ce95b385cf49a411f577ca8
font_01_sfnt_off00011ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF9 9404 bytes
SHA-256: 2cc7069b75e015c3a76a22d0590beeb15bb8d7fd6073c0539e016d6123e158db
font_02_sfnt_off00013d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D5E 11032 bytes
SHA-256: 2e9947219569c52c779e352273b60d637dda0f3fd5a8652cbb512a87c91cd33f

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