Malicious PDF — malware analysis report

Static analysis result for SHA-256 9391f70d5bd68738…

MALICIOUS

PDF

75.9 KB Created: 2021-03-01 13:10:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 05decf94647549c5e5634c226a1d7b0e SHA-1: 45ab69df35dd6b5cc2ec0c5f6735743999259103 SHA-256: 9391f70d5bd68738bbfe1ab735663519e236ee0db74e457807bfc519fb7db7a5
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 as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains metadata suggesting it might be a lure for a product, likely to trick users into visiting the malicious URL. No scripts were extracted, but the presence of external URIs and high heuristic scores indicate a phishing or malware distribution attempt.

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://crophysi.ru/strik?utm_term=skyrc+imax+b6ac+v2+dual+power PDF link annotation
    • http://organic100.fun/wuvotelbt8zm.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/aAjfigZ/1731014022.pdfIn PDF document text
    • http://copyrights-notices-helps.com/kivogakk7trj.pdfIn PDF document text
    • https://cdn.sqhk.co/xoberuweri/nhhSDyT/furajeduxirupolukibagizu.pdfIn PDF document text
    • https://cdn.sqhk.co/leredupodeka/fiiFjer/erebus_escape_room_reviews.pdfIn PDF document text
    • http://seamanygau.best/bujukosbz3ul.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/fijdMje/42635549895.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://fedatowuka.epizy.com/cat_images_cute.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/badri_tamil_audio_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/45828114302.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/80616607217.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/chest_cough_guidelines_2006.pdfIn PDF document text
    • http://katezoluvezile.epizy.com/sundance_tv_channel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/guburola.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD200 5956 bytes
SHA-256: d26122ca43bb0d8e9949221da0bf8938466165ff8a7a3a09a2f3428df7edae66
font_01_sfnt_off0000e648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE648 9064 bytes
SHA-256: f4110e3b89ef9bdfdc5fe6feaf9ae97a65f13b9ce6a81d12eb8f6a5c25db92b7
font_02_sfnt_off0000fe8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8A 9728 bytes
SHA-256: 079502432ab88ba343c344ec064151e7653477db07500aba52d2decb98b7397f

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