Malicious PDF — malware analysis report

Static analysis result for SHA-256 847a9888434934cd…

MALICIOUS

PDF

75.3 KB Created: 2021-03-18 10:14:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: cee3388eb104605825e0fcd7dd1bbdb3 SHA-1: e82763c57b6bc5ca89b9d81e0b8bfaa7333b6ea5 SHA-256: 847a9888434934cd310b36201f3276601ad06c16c502c7209f0564d19118715f
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URL pointing to a suspicious domain associated with 'blackmart apk download', suggesting a phishing or malware distribution attempt. The presence of a 'download button' heuristic further supports this, indicating a lure to download potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://kuzutuzo.ru/wix?keyword=blackmart+apk+download PDF link annotation
    • https://baxakazakibabim.weebly.com/uploads/1/3/4/5/134585713/xasatow-tolafigavuke.pdfIn PDF document text
    • https://fefedajukuda.weebly.com/uploads/1/3/1/0/131070841/lokuw_bibeluwewugado.pdfIn PDF document text
    • http://nubemeketetu.mypressonline.com/apocrifos_del_antiguo_testamento_v.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/13629991758.pdfIn PDF document text
    • http://kovefubiwajulo.22web.org/english_grammar_in_use_5th_edition_book_with_answers_and_interactive_ebook.pdfIn PDF document text
    • http://bexemusu.mypressonline.com/britannicus_racine.pdfIn PDF document text
    • http://vuletotam.scienceontheweb.net/nosumumatebuvo.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/a_song_of_ice_and_fire_in_chronological_order.pdfIn PDF document text
    • http://piwulag.sportsontheweb.net/32178172374.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/zuwosil/mathematics_dictionary_james.pdfIn PDF document text
    • https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_f8e501171986460da38ed56c847acdb2.pdf?index=trueIn PDF document text
    • http://wadumoseri.rf.gd/pebematurogivaxukobaxugib.pdfIn PDF document text
    • http://pofijiserige.onlinewebshop.net/39475146287.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/taoist_sacred_writings.pdfIn PDF document text
    • http://vekamodadon.onlinewebshop.net/jutivelepidunixalelibonof.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/59095977856.pdfIn PDF document text
    • http://puriruf.epizy.com/access_database_training.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/bts_all_albums_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/tubeku.pdfIn PDF document text
    • https://dd54f144-242a-4a88-9385-6c39f9996aab.filesusr.com/ugd/9f32c1_827f03f5499e44478282509332d2ebac.pdf?index=trueIn 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_off0000eac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC7 5244 bytes
SHA-256: 74e75f38c4365733dcce3e3c46fd43a508f333f8082a18761edb9a5fe6e36b4f
font_01_sfnt_off0000fc9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9A 10516 bytes
SHA-256: a6619e9aa22f85990f327d393d0c8d7dfa08fdb18857a4810b43a27d5cb45f94

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