Malicious PDF — malware analysis report

Static analysis result for SHA-256 017c5d97b4dcf763…

MALICIOUS

PDF

84.0 KB Created: 2021-03-27 16:34:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46dfefdc644ae9c092fa76d137a14f67 SHA-1: 72a9624217a11999b183d773a1e39a9eb53e6d29 SHA-256: 017c5d97b4dcf763d5efd1be7db4664dd05eb4786f45abd0360de52a4ff8d8ad
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'El imperativo en ingles pdf' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/award?keyword=el+imperativo+en+ingles+pdf
    • https://cdn.sqhk.co/visipapafef/ffYjiia/history_of_pakistan_air_force.pdf
    • http://car-den.ru/23037892315p0ipm.pdf
    • http://jakartapro.xyz/dizesamodugakopukidijorevi6x80.pdf
    • http://vuwomodema.22web.org/62270408120.pdf
    • http://visezuxopusifik.iblogger.org/how_to_find_the_zeros_of_a_cubic_function.pdf
    • https://cdn.sqhk.co/kugorazig/GVjjmgp/zuled.pdf
    • http://virona.org/rorajesudinenekupafifviug.pdf
    • http://zavarivaemvmeste.ru/navy_basic_training_base_in_illinois5inmm.pdf
    • http://bifinisotipa.22web.org/3909689518.pdf
    • https://cdn.sqhk.co/vatukaso/ehhjbpp/police_car_sound_ringtone_free_download.pdf
    • http://remunomixet.22web.org/ladugitatem.pdf
    • https://sezowizubuv.weebly.com/uploads/1/3/0/8/130874308/gopanivofudedogute.pdf
    • https://sasanufodokedu.weebly.com/uploads/1/3/0/9/130969760/1101649.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/niporofez/nuvuzimerapadosinitukibe.pdf
    • https://s3.amazonaws.com/bejexe/motu_patlu_cartoon_3gp_video_2019.pdf
    • http://bavevex.onlinewebshop.net/50672135223.pdf
    • http://tekonut.rf.gd/wekobuwikikojemolukok.pdf
    • https://s3.amazonaws.com/divikufifir/kemevu.pdf
    • http://jokubamobivavum.onlinewebshop.net/illustrated_encyclopedia_of_animal_life.pdf
    • https://s3.amazonaws.com/fomudebipefasu/cisco_catalyst_3750g_48ps_switch_datasheet.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e87e.bin
37241d369deae3787d06749247e72e31f6bf7522d1215d816914685b4983bdd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE87E 5380 bytes
font_01_sfnt_off0000fab1.bin
6d2a3a16cc464ce72cf05976c7f96a31c93af2202e0dc760c37a694345e222ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 1800 bytes
font_02_sfnt_off00010341.bin
8375a608a10dba63684d3612462d53630b61976d4c449795103fb2d27b5e7107		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10341 12040 bytes
font_03_sfnt_off00012ace.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ACE 16204 bytes

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