Malicious PDF — malware analysis report

Static analysis result for SHA-256 9518c5ed451410fd…

MALICIOUS

PDF

75.4 KB Created: 2021-02-24 14:30:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c73db79d13275c4d574df7881fd56ffb SHA-1: b31a3825959a4f285a385d88e94ac6c889ca7f34 SHA-256: 9518c5ed451410fd3c04030e45e1a21b245571c0d31a1b10cd52debd49330b87
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest a phishing or malware distribution attempt, likely delivered as an attachment.

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://druttle.ru/award?keyword=how+to+use+wagner+airless+paint+sprayer PDF link annotation
    • https://cdn.sqhk.co/wufevinek/FhdARJZ/14489781376.pdfIn PDF document text
    • https://cdn.sqhk.co/mekibekowufe/JijWjfI/pottery_barn_baby_gift_card_balance.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/VmerhjF/giant_panda_endangered_graph.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/jdrshah/learn_html_and_css_fast.pdfIn PDF document text
    • https://cdn.sqhk.co/konafomaz/dgdErfo/skywars_maps_for_mcpe.pdfIn PDF document text
    • https://cdn.sqhk.co/kimorotadopo/gj6ugi7/motogp_calendar_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/9mhVkMB/merivakolajetumolutin.pdfIn PDF document text
    • https://cdn.sqhk.co/pufowuvikij/jdDijQY/spider_bites_on_face_images.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tusepubenawipad.rf.gd/bikino.pdfIn PDF document text
    • http://jesudojisa.rf.gd/83889564250.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/high_definition_audio_bus_driver_windows_10_64_bit_amd.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/fagagezabawaputa.pdfIn PDF document text
    • http://kadegezopofog.rf.gd/spanish_2_capitulo_5a_crossword_answers.pdfIn PDF document text
    • http://xutenodopo.rf.gd/thank_you_email_templates_after_interview.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/soposegozosaz.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BC 5144 bytes
SHA-256: 8f84fdd852eb974981b86ea5fff74cedf1f392fa3c9754c0635f29b85ffb7c6a
font_01_sfnt_off0000fb64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB64 10388 bytes
SHA-256: 6086c5cbdf179f74e6f903fd87591f4eef3e37f3c8f93e73ab39fc3a6fe15387