Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea0cc42eea44f27…

MALICIOUS

PDF

73.0 KB Created: 2021-03-04 04:37:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 6f41b0e13890af9a9a21ed521bd830b6 SHA-1: 2758da45a88e49228392865a4ccf890baa224e26 SHA-256: 6ea0cc42eea44f27e258dad5b1cb0d2b5a93be2816b9f7742ec9b20ca6d4517b
96 Risk Score

Malware Insights

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

The PDF contains heuristics indicating embedded URLs and is flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to 'super smash flash 1 apk download', suggesting a lure to a malicious website. The presence of external URIs points to an attempt to redirect the user to potentially harmful content.

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://bologen.ru/wix?keyword=super+smash+flash+1+apk+download PDF link annotation
    • http://kuzojud.66ghz.com/bangla_academy_dictionary_for_pc.pdfIn PDF document text
    • http://chebsvet.ru/analog_and_digital_signalseewjl.pdfIn PDF document text
    • https://cdn.sqhk.co/sojuzafu/uhahggd/3775912082.pdfIn PDF document text
    • http://agent-spv.space/63089667188etsqn.pdfIn PDF document text
    • http://ezfix.asia/nuxasibawnn4r.pdfIn PDF document text
    • http://saudiautoinsurance.com/90092164873p1a88.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/jnbqmhh/train_times_from_central_station_sydney_to_newcastle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423154/normal_601db950aef32.pdfIn PDF document text
    • http://testersairf.xyz/wudedagudatawezovutisazoqi0e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413345/normal_5fdbdba9bf01b.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/9iihcsu/sogojivefeso.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/hfjiPjd/business_administration_and_management_major_description.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
    • http://derizivazodox.rf.gd/satenevilumefuwofakitu.pdfIn PDF document text
    • http://kuxilolijorix.rf.gd/hornady_300_blk_reloading_dies.pdfIn PDF document text
    • http://mixexomamag.rf.gd/conjunction_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/london_bridge_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/nufawoposin.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/sogosifepaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/mazubifokativoru.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/dawn_of_titans_hack_apk_ios.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_off0000d3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B8 5344 bytes
SHA-256: 90cb73c47d2515c98b2e98b9b9fa27daa182e8679c138d426a28753858107716
font_01_sfnt_off0000e5cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CB 10188 bytes
SHA-256: 00cf4ac74fb5ed2533f50abab6e14104bb7f91a2ffbadc59d512cade2737881d
font_02_sfnt_off000108a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A3 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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