Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae7ba78bf20da40…

MALICIOUS

PDF

78.8 KB Created: 2021-03-19 22:25:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: c6ba7aa5a27fb5505a882ef64e136705 SHA-1: 45b9d99f872814c98ae32fc543491bd782d476c1 SHA-256: 0ae7ba78bf20da4016771eef06d832b908498c1f9a1482fe3cb8c9b82937ce0a
104 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that appears to be a lure for downloading compressed data, likely a malicious payload. The XFA form heuristic and ML classifier strongly indicate malicious intent. While no scripts were directly extracted, the presence of an external URI and the overall classification suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • 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://baarspo.ru/wix?keyword=oddworld+stranger%2527s+wrath+apk+data+highly+compressed PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4377697/normal_5ff117953883f.pdfIn PDF document text
    • http://sopisafexuj.sportsontheweb.net/35412834459.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417523/normal_5fec5b6520237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500665/normal_602334cb4ab79.pdfIn PDF document text
    • http://santand-es.com/electro-_tek_multimeter_manualkzi5k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481839/normal_5ff4cf6ad1191.pdfIn PDF document text
    • http://getbuiss.online/dracula_bram_stoker_pelicula_completa_en_espaolkqt42.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/kovilowab/46083776307.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/rutizu.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/disgaea_1_switch_guide.pdfIn PDF document text
    • http://nifusotajezunur.atwebpages.com/perovevoxanumivareluwudel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eeb556d-d058-4a30-9d3a-ff98eef43dac/nanatokulajoxemijoviv.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/bbc_iplayer_apk_android_tv.pdfIn PDF document text
    • http://wazeniwemir.onlinewebshop.net/luxesapifuxawajawa.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/ssc_2018_ctg_board_marksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0601d711-6bc4-4a28-89ff-e362c9723e7f/livejotepinom.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/mezibene.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/muzibinupedowupulab.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/legobaruvivebojuribusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e825a5f9-c414-4e70-bd5d-85a806128846/roomba_960_not_fully_charging.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20833933-0691-4373-a0c9-80331f83e60b/their_eyes_were_watching_god_summary_chapter_10.pdfIn PDF document text
    • http://vawerudarasikow.myartsonline.com/public_speaking_anxiety_classes.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_off0000ef54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF54 5808 bytes
SHA-256: b65415f83533a91423d79d419c8739f262b4f05671e2230519dcf497fd0fd6e4
font_01_sfnt_off00010309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10309 12444 bytes
SHA-256: a2e713a8f71c1ddae68d9060eb30ee163b4cd161c930c8f045bf284c14a47481

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