Malicious PDF — malware analysis report

Static analysis result for SHA-256 8910bcbacd1e65c4…

MALICIOUS

PDF

70.2 KB Created: 2021-02-16 14:18:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4de482e827f7a9c3fad00a01e820d9b5 SHA-1: 20db4f4b20b89b48d645ab89b546f4e88c2a98a9 SHA-256: 8910bcbacd1e65c4f41929165840977763b42641607ee9acb2d224ec3ec3fab4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to search queries.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wix?keyword=calories+in+a+bbq+pork+chop PDF link annotation
    • http://meetsol.xyz/pathfinder_character_sheet_editable04f25.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/Dyiuujg/90885556498.pdfIn PDF document text
    • http://silkhfig.bid/63878548920malfl.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/jdPOn3a/super_duper_double_bubble_gum_song_lyrics.pdfIn PDF document text
    • http://fiwojinafo.22web.org/hp_probook_440_g5_notebook_pc_datasheet.pdfIn PDF document text
    • https://cdn.sqhk.co/pekotegafod/jaggMij/34764336448.pdfIn PDF document text
    • http://4gusevshop.space/peditezjr2m.pdfIn PDF document text
    • http://shoop-fk.ru/bescherelle_college_gratuit2q483.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/gaxuremewuger/55969268533.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/38859037689.pdfIn PDF document text
    • http://sozizuw.rf.gd/al_quran_karim.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/17801967505.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/braveheart_main_theme_piano.pdfIn PDF document text
    • http://kutalawupabewu.rf.gd/xerabozev.pdfIn PDF document text
    • https://s3.amazonaws.com/gazijewevan/lasinu.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/annmariya_kalippilaanu_malayalam_full_movie.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_off0000d773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD773 5256 bytes
SHA-256: 9f41306f69917224fec91ede2876037ad959f5adf4d1e97f289710d8d0100834
font_01_sfnt_off0000e94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94B 10240 bytes
SHA-256: 5e25eeb61b7a745cf7ae9bbab172e226783b1910c81b727f2b9cc0ecfcc65917

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