Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ddf9383b49f4d3…

MALICIOUS

PDF

77.6 KB Created: 2021-03-05 22:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: a11efd5594bc306afcc7ef7da7ee79c2 SHA-1: be15b6ece54c2913b387815c83c8b286586e7acf SHA-256: d8ddf9383b49f4d3b34a07742a805f859bb6dccc1e63437c66aebbd5255d6391
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 malicious domain, likely to deliver a phishing or malware payload. The ML classifier and ClamAV detection strongly indicate malicious intent, and the document body, though heavily obfuscated, suggests a lure related to appliance repair. No scripts were extracted, but the presence of external URLs and high detection scores point to a phishing or downloader attack.

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://golowaki.ru/strik?utm_term=what+to+do+when+your+keurig+2.0+stopped+brewing PDF link annotation
    • http://mexicotop.xyz/548838963443b5is.pdfIn PDF document text
    • http://cyberghost.store/mewefajigafirugapipowaykft5.pdfIn PDF document text
    • http://grusha.space/48_laws_of_power_free_kindle_downloadfyqkw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369507/normal_5ff5e96e5d3a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404108/normal_6036f5a64cd54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5fd8cda1aac6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462694/normal_601014fd20043.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415936/normal_5feb48d5088d5.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/gasodamuza/kevibopig.pdfIn PDF document text
    • http://rojegasofibi.epizy.com/60693624839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7242793-c98f-46d3-93ad-9f63ee3eb6f6/fizamaj.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/38375265100.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/44810602473.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/maxafudemi.pdfIn PDF document text
    • http://bilunijo.epizy.com/hand_held_sheet_metal_flanger.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/what_is_the_relationship_between_population_and_economic_welfare.pdfIn PDF document text
    • http://luzawuwu.epizy.com/corrugated_roof_sheet_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5967a1-c91c-49ea-a875-2ebc6b15fd7f/2967962840.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/dot_grid_microsoft_word_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2a4adba-8db8-428f-b232-62299be2017e/zone_6_pittsburgh_police.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_off0000f0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D3 5908 bytes
SHA-256: 852d89637826b7fd9757da5b9a7315a22f9425ebe0108aedafe7827c9f578a77
font_01_sfnt_off0001050b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1050B 10556 bytes
SHA-256: 33b94a9cfd96dafedf8712a4533b14aa430ea46cac7fdff4c95a2124900ecb87

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