Malicious PDF — malware analysis report

Static analysis result for SHA-256 5455491dafaa3dc8…

MALICIOUS

PDF

73.5 KB Created: 2021-03-14 18:11:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e06bae3e463a5cb6660b380a2bd79da8 SHA-1: 1d2e51f8de058d7c360e39181b530a17d41dc753 SHA-256: 5455491dafaa3dc81535c66708e98f20d1497db9100be979389539e357fe8aa0
96 Risk Score

Malware Insights

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

The PDF contains embedded URLs that redirect to external websites, likely for phishing purposes. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to government correspondence, further supporting a phishing attack pattern.

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://lozipotod.ru/123?utm_term=sample+letter+to+government+official+template
    • http://lafovawolifi.22web.org/wilsonart_laminate_sheets_for_countertops.pdf
    • https://cdn.sqhk.co/lepudijazur/cetijmU/sajawipamep.pdf
    • https://cdn-cms.f-static.net/uploads/4376856/normal_600dc2e79e363.pdf
    • https://cdn-cms.f-static.net/uploads/4501634/normal_60299b0191a61.pdf
    • https://cdn-cms.f-static.net/uploads/4454047/normal_60355d094d6c4.pdf
    • https://cdn.sqhk.co/lagusive/NLjf833/22753557980.pdf
    • https://cdn.sqhk.co/toviranevu/bNwGejb/66031595213.pdf
    • https://cdn.sqhk.co/jivazufevi/cTgcmQr/nail_art_spa_pullman_prices.pdf
    • http://fuvesozufinefi.medianewsonline.com/alimentos_con_vitamina_k.pdf
    • https://cdn.sqhk.co/janezewufaj/OhfhgLD/1278411059.pdf
    • http://zebisol.mypressonline.com/washington_dc_covid_testing_requirements.pdf
    • https://static.s123-cdn-static.com/uploads/4452835/normal_5ffde52ad8c1a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/daselex/freemake_video_er_crack_chomikuj.pdf
    • https://s3.amazonaws.com/besafefaf/sail_awolnation_sheet_music_piano_free.pdf
    • https://s3.amazonaws.com/zerejibixupav/assassin_s_creed_syndicate_review_game_informer.pdf
    • http://gufesabil.rf.gd/tuwusiketibomobexajoso.pdf
    • https://uploads.strikinglycdn.com/files/a9a9665e-668c-41ff-9c1f-d21d3551961a/lejogagiwulunuwu.pdf
    • https://s3.amazonaws.com/xupizewuxere/9685829174.pdf
    • https://uploads.strikinglycdn.com/files/cbb797ba-5580-4f73-b0aa-2d06d9dd2cce/44353833684.pdf
    • http://zovaner.rf.gd/zopagotu.pdf
    • http://mifaneneveloje.epizy.com/central_and_peripheral_persuasion.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f0.bin
6ffa51338a4cfa11c1f1cd345fe33ffbf7ea18cbb93d4faa86880c22031df908
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F0 5320 bytes
font_01_sfnt_off0000f7fd.bin
0e96cf313bf6a475318141a3a148754e703d7a9c21cb2d7cb4a35ad6a7bd6ae7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FD 9496 bytes