Malicious PDF — malware analysis report

Static analysis result for SHA-256 128f7e420f000474…

MALICIOUS

PDF

96.8 KB Created: 2021-04-07 16:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 707a29bd302e82ac00f47086f0b01251 SHA-1: 1fa9ac084d53c2b2fc10c792609e113404a1a3f7 SHA-256: 128f7e420f0004743bbbadbc19b93f2cf895f3afa5f59fc689867af9ce984465
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=sweaty+fortnite+chinese+characters PDF link annotation
    • http://muvavezupat.22web.org/compound_interest_formula_download.pdfIn PDF document text
    • http://bepedegikojafeb.22web.org/que_es_superficie_corporal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f1a764-5139-4991-9f15-2c5c29c332e9/the_pact_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/pubutulu.pdfIn PDF document text
    • https://s3.amazonaws.com/xapota/98559934630.pdfIn PDF document text
    • http://jirufemen.epizy.com/learn_python_3_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/480638b3-8629-4032-bccc-04da0a24000f/tulajixo.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/khatrimaza_latest_bollywood_movies_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/how_to_do_finger_joints_in_wood.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/bilatalezo.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/xozatef.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/how_to_install_zebra_zp450.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/buxele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06627d7b-8afd-4496-bd32-58ef6e4b14b9/44775555236.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/ibps_guide_current_affairs_june_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/metallica_nothing_else_matters_solo_guitar_tab.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/51203358304.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/hunger_games_mockingjay_part_one_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d011d600-f4f8-47f9-bd29-4439315c3500/30656561779.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/tuwusixajug.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/wirasobiburubik.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DF 16612 bytes
SHA-256: 0c8a105f0ce41ac5c07e88df61da8b698c0b64231316535702e185543f37aa84
font_01_sfnt_off000125c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125C0 5236 bytes
SHA-256: c96170125184b5991ea1144ca1b489d32a2a30c922e6fb477ccf16f26bf5f66a
font_02_sfnt_off000137a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137A4 11716 bytes
SHA-256: 22a81012018f8583aa4eee7d2fac73269ff0acdc6cce211fe1a214b489b38bbf
font_03_sfnt_off00015e5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E5A 16132 bytes
SHA-256: 6c511cd2548aab1566dad8f54fccf2be4cd056cf5a4d5d56937977fde9165995