Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6aa5d8c1277ff6…

MALICIOUS

PDF

79.3 KB Created: 2021-02-13 02:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: a05a64b0aa0aded008e4f7b01fc6ae98 SHA-1: 995e874314b26afdb1a86c37f1f407eeb8209d03 SHA-256: 6a6aa5d8c1277ff62996a6b92e47830e7649256a27928cba3bb47274342d559e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely the intended destination for a phishing attempt. The document body, though partially obfuscated, suggests a lure related to horse breeds to entice users to click the malicious link.

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://leonvi.ru/wix?keyword=las+mejores+razas+de+caballos+para+correr PDF link annotation
    • https://cdn.sqhk.co/seseniluvus/qQieMXf/88308084777.pdfIn PDF document text
    • https://cdn.sqhk.co/vozofugova/gZhe2ib/fallensouls_origins_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xewiliwilax/PwCi5jf/wehrmacht_luftwaffe_ranks.pdfIn PDF document text
    • https://cdn.sqhk.co/jirudumom/fuiaLji/84584669270.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/gjHw2ic/49886382965.pdfIn PDF document text
    • https://cdn.sqhk.co/puwetudul/ouggggf/tornado_watch_and_warning_difference.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/gItpXjf/gojuwatexowafedeji.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/febopa/arcady_petrov_books.pdfIn PDF document text
    • http://gefuxexo.epizy.com/51960073662.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/tizufagesemoj.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/95204089804.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/10194671583.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/android_callback_when_fragment_is_visible.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/lifusulakuzawogu.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_off0000ebf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 4980 bytes
SHA-256: b8cd51e090d02a23d5f0be9f83dfcacaa093bddca03d3ff7a5a3b49e59867ca1
font_01_sfnt_off0000fce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE8 11384 bytes
SHA-256: d55ee35735114a56ae21599b47cc9f5ab74d31c4ac7e67c1fd486d0bac19e199
font_02_sfnt_off000121e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E8 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176