Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c9583388698b423…

MALICIOUS

PDF

77.4 KB Created: 2021-03-01 18:00:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7f82a690caaa72151c71f1666e91eea1 SHA-1: 3fba0ae33fff5d18fe0b82fdff09f2f89f81a596 SHA-256: 3c9583388698b4237f4dc4c3c5d457367ee50256a8be1c7c052722a12ef43571
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL that directs users to a suspicious domain, likely for credential harvesting or malware distribution. The document body, though partially corrupted, suggests a lure related to popular media to entice clicks on the malicious link.

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://jumiwimov.ru/award?keyword=is+percy+jackson+on+disney+plus+right+now PDF link annotation
    • https://cdn.sqhk.co/tosobulig/ibihDjh/90359322837.pdfIn PDF document text
    • http://vbruti.site/lingua_latina_answers4aexk.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/jepikakuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487935/normal_602dd97d01c85.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/fghM0Y0/zozuv.pdfIn PDF document text
    • https://cdn.sqhk.co/fivukidado/whcyheg/56463132427.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/bjaPhbW/black_widow_release_date_in_theaters.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487413/normal_5fe1837d6ab98.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/geraromu/stop_bottom_navigation_animation_android.pdfIn PDF document text
    • http://nejimafalun.onlinewebshop.net/678154266.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/list_of_elements_of_poetry.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_off0000f1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AC 5604 bytes
SHA-256: 26271cc1e4bde00870a0c2786c92ac4efe6545c447770199455342a67f07abbd
font_01_sfnt_off000104d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D1 10604 bytes
SHA-256: afd83cff56b67b3a3bdaad1359535e78763cc37537777cd3b345bc493b5c7d1a

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