Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d821fdbdde9b96e…

MALICIOUS

PDF

76.3 KB Created: 2021-02-06 10:06:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d31996b36c44f0e397d91fa62e51f862 SHA-1: e907305705e60872fe53387c36565335939c1958 SHA-256: 2d821fdbdde9b96edaa0f4d4e01d52342754ab769b0add0fc74e77a3ec4c82fd
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'https://jottigo.ru/wb?keyword=blackpink%20whistle%20acoustic%20instrumental', likely a phishing or malware distribution lure. The document body, though heavily obfuscated, suggests a theme related to 'blackpink whistle acoustic instrumental' to entice users.

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/wb?keyword=blackpink%20whistle%20acoustic%20instrumental PDF link annotation
    • https://cdn.sqhk.co/bebubofawa/jj7Mxgj/53641642154.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/jjejdy5/98084891449.pdfIn PDF document text
    • http://gexafudotifunud.66ghz.com/cg_piano_video_com.pdfIn PDF document text
    • https://cdn.sqhk.co/letijefa/nifgjjf/rotten_teeth_dream_islam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369142/normal_5fd6c269eb925.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/vyYheyq/36260882285.pdfIn PDF document text
    • https://cdn.sqhk.co/mowuseparap/hggiju8/72387872528.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/nZgfhg5/retroarch_gameboy_advance.pdfIn PDF document text
    • https://cdn.sqhk.co/fepogosu/igpdhaq/how_much_does_crew_app_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/kowukogifaw/jdWmge3/87886386119.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/idWifMF/39108477895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495854/normal_5fe92ad436811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/bulbul_kannada_movie_songs_free_123musiq.pdfIn PDF document text
    • http://zugujegezamuto.epizy.com/difference_between_census_and_sample_survey.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D8 5260 bytes
SHA-256: 1e8e064dfa1a06ca7e656b0e1685666d0632f7b5c2ababa3e15771ade2a9d6bc
font_01_sfnt_off0000f295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF295 10324 bytes
SHA-256: 1e89383378cabab4c22a2fe97bd5e20fc08ea94de3ec6dd87e1d1b2bee16f312
font_02_sfnt_off000115b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115B7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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