Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd546046940c6cb5…

MALICIOUS

PDF

70.6 KB Created: 2020-12-01 07:36:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 80999d8eda84499da882211563ac18c7 SHA-1: 229d9350511b06cdd6fdfedea070d37d79862d2c SHA-256: bd546046940c6cb5b4c3530cacc6aa4f70b09d46473c434a49a454ac3e31029b
104 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. It uses an invoice-themed 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 0.9998

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 invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://traffking.ru/123?utm_term=how+to+use+a+cash+receipt+book PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2af36df132613bbc92a03/t/5fc5828f08845d0924470f67/1606779536586/860276830.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffbf92e34347c703edab4/t/5fc2225cfa04221c7167dd48/1606558307137/massey_ferguson_124_baler_knotter_parts.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0f5c3c6ccf69f32624ff/1606291292460/trussing_a_turkey_with_twine.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf69479b1ed03538d362e7/1606379848047/72300167956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83097cb3-2b66-4b4f-9943-a2258ec518de/19696914605.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/cs_lewis_screwtape_letters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fa450a-31fa-4757-b390-12788a6c686a/74818348703.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa966a371610b87744b2/1606220439335/35981633574.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/frigidaire_countertop_ice_maker_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/207d548f-33f4-4354-956f-1f8e606dd542/34767647470.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/no_pooping_sign_for_dogs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d07685a-c10d-4822-9e3f-a1621978bcd7/playstation_error_code_8002a548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/682c8ab4-f64c-4c79-b08a-72220b2b5a1e/dodasuzeralaj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd146c1d5d775a78523f31/1606227053246/7th_grade_spelling_words_games.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_off0000d815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD815 5244 bytes
SHA-256: fc94d9c818640d0ac2ea48fbdb93be7aec9bf5660b61c4be068c64eacc925a90
font_01_sfnt_off0000e9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F1 10404 bytes
SHA-256: 67c4bb025270b53ee4c9bef90630bdb721b84b2a75792935b371dbf2132b5292

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