Malicious PDF — malware analysis report

Static analysis result for SHA-256 34eb1000326b27e0…

MALICIOUS

PDF

70.5 KB Created: 2021-05-25 21:25:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f99b5580c42cf3f0e4feb6d4fc041a36 SHA-1: ed3abacdc55f563e720d831545cfa1305a508ee4 SHA-256: 34eb1000326b27e01e5cec0d9c7a3ac2dfc1b8eb12561a7ea0d1b21e78c4bb4d
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, indicating malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to downloading a PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=maravillosamente+imperfecto+escandalosamente+feliz+descargar+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/9dfa8910-88e3-4df3-9d50-03c230d40da4/10_000_reasons_-_song_by_matt_redman_steven_samuel_devassy.pdf
    • https://s3.amazonaws.com/dakebesuvum/74677032035.pdf
    • https://s3.amazonaws.com/welanisowari/vefov.pdf
    • https://uploads.strikinglycdn.com/files/9bd77698-b2a3-46c1-aa9a-dcd6281c7326/nedelosotexuzukafepep.pdf
    • https://s3.amazonaws.com/mizeteb/how_to_download_xbox_360_controller_driver_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/ab84e30c-7b7f-4601-910a-76a674c832e6/28070272511.pdf
    • https://uploads.strikinglycdn.com/files/0fa62293-4151-4ff8-b844-ee408f8db49b/49982753595.pdf
    • https://uploads.strikinglycdn.com/files/8ee96d42-2fff-473c-8acd-7fbe981d3190/the_chaser_by_john_collier_meaning.pdf
    • https://s3.amazonaws.com/juvetaso/excel_vba_application._worksheetfunction._counta.pdf
    • https://s3.amazonaws.com/joterige/mupafazobujegegare.pdf
    • https://uploads.strikinglycdn.com/files/37d057f7-ceb8-45f8-8283-c649eb395206/bunotibitejerafebi.pdf
    • https://uploads.strikinglycdn.com/files/6b57164f-2ea9-4fa1-85b2-123a0706a31b/bible_passages_that_support_the_trinity.pdf
    • https://s3.amazonaws.com/fulosobezur/12852125975.pdf
    • https://uploads.strikinglycdn.com/files/96e11e72-b3f6-4e4f-8c6b-b8efa1458c3c/74939747555.pdf
    • https://s3.amazonaws.com/selivuvumepaveb/60251553986.pdf
    • https://s3.amazonaws.com/libowebujakux/kesoximojamekalanomadebur.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d018.bin
14ca061d8272daf25c891fea53fb5da86b27607b1a8c6a522f43db185b4d0ae9
pdf-font-stream PDF embedded font (sfnt) at offset 0xD018 5592 bytes
font_01_sfnt_off0000e327.bin
deb9c78a118bd669018893dd556ed0e5ab18d801bdc462887682389aaf858d9d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE327 12244 bytes