Malicious PDF — malware analysis report

Static analysis result for SHA-256 c23054ad614cc6be…

MALICIOUS

PDF

73.0 KB Created: 2021-02-17 12:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: bdfe3709fd2fbd77b5b72f2094a218d5 SHA-1: a964271fc63f9acf46160b6720f5c739623e5ba8 SHA-256: c23054ad614cc6be2a1957a7fcc191d9b73c47e0acff2b377b1451c37961e7fa
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the presence of an external URI suggests a social engineering 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://leonvi.ru/wix?keyword=st.+mary%2527s+cemetery+chicago PDF link annotation
    • https://cdn.sqhk.co/bigulikexupa/jdMZwQE/combat_shooting_games_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/HgicMjg/bewigabetatikirek.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/QThrihG/bluestone_and_hockley_phone_number.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/saxefi/28070655597.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/blockman_multiplayer_apkhere.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxomigo/66817854348.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/maradona_new_malayalam_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/keytool_export_cert_pem_format.pdfIn PDF document text
    • http://wetusadesaxoni.rf.gd/60023598179.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/xunidobagonogasopewa.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/wiriwanirujefaxadatukalu.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/47934010316.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/99533507707.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/78248326354.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/padirozetemowepiwuwepisi.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_off0000e242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE242 5452 bytes
SHA-256: fd3a396fc67d7cc42c7f41ff6125346f884f926982e46f95ff18eab97cd180c6
font_01_sfnt_off0000f4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B2 9972 bytes
SHA-256: a7f46b8c0d487fb5e2945c9f8448d9b4541dbf2914dc393c77b23518d52b806a