Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7aab1d356e657fb…

MALICIOUS

PDF

72.7 KB Created: 2021-02-28 20:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1443b9379c191ac3d66bcc4372d301e3 SHA-1: 183371dea7b3d50963a50711846f6caff4623c33 SHA-256: a7aab1d356e657fbf88b11e2bdbde25fc3a5d0f268bde9cd07eb86b834381def
96 Risk Score

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-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://soxebez.ru/wix?keyword=ib+grading+scale+1-7+2019 PDF link annotation
    • http://adanakebap.org/avakin_life_unlimited_coins_apk3teyk.pdfIn PDF document text
    • http://vubitim.sportsontheweb.net/jujalu.pdfIn PDF document text
    • http://smotrikino.fun/what_is_christian_ethics_essayjvwqk.pdfIn PDF document text
    • http://kokolonesafu.getenjoyment.net/simetojonadoworara.pdfIn PDF document text
    • http://lozhobelir.space/natofblnz9.pdfIn PDF document text
    • http://naliputa.mywebcommunity.org/duromenuzud.pdfIn PDF document text
    • http://expo-kit.ru/string_format_named_parameters_pythonde5fx.pdfIn PDF document text
    • http://ritixibetono.mygamesonline.org/romeo_and_juliet_leonardo_dicaprio_trailer_ita.pdfIn PDF document text
    • http://fanisore.sportsontheweb.net/samsung_grand_prime_motherboard_price_in_india.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/on_becoming_a_person_book_depository.pdfIn PDF document text
    • http://shop-profildoors.ru/swayam_prabha_app_freejyq8b.pdfIn PDF document text
    • http://datab.vip/annabel_lee_summaryzc4vq.pdfIn PDF document text
    • http://dashcamtopbest.com/ratilazosejorixudani2h56.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/mokamoba/37168631350.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/wadusazaromokabokuler.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/coliformes_fecais_como_a.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/genusi.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_off0000dd9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9E 5780 bytes
SHA-256: 6654614a50bba13aed031ab1db5edda7d77c92b1276051eacd36cf409bc5a7bf
font_01_sfnt_off0000f164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF164 10652 bytes
SHA-256: df8574611ed77344d3ea87c5b9cb6610350412e7a93cfadc809c0b834d8d8337

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