Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70b2bbd7c859adf…

MALICIOUS

PDF

67.8 KB Created: 2021-02-08 18:03:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 935642e397e769f17f6b8cb4d81499cd SHA-1: cbf8fa54f81f64e8245625c5231df85652cf97f3 SHA-256: a70b2bbd7c859adf0a8e021abc323900afc42484d8fce791d30f7c82dfc3b053
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to the URL's search term, suggesting a lure.

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://leonvi.ru/aws?utm_term=swing+low+sweet+chariot+chords+pdf PDF link annotation
    • http://sukuzarimeke.22web.org/jafanabefunanoledexonuguj.pdfIn PDF document text
    • http://befemoxujutebi.22web.org/totutawigobafetin.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/vutame/funny_jokes_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/vandanam_film_ringtone_free.pdfIn PDF document text
    • http://kodadus.epizy.com/bahubali_2_telugu_video_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/air_core_transformer_calculation.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/21808988928.pdfIn PDF document text
    • http://tibibexubedumu.rf.gd/lelonuwedatatila.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/bhoomi_mutation_report_village_wise.pdfIn PDF document text
    • https://s3.amazonaws.com/mokixetat/blasphemy_law_in_pakistan.pdfIn PDF document text
    • http://dufakukin.rf.gd/33048584243.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/rakopujurete.pdfIn PDF document text
    • http://jefeduwikiw.epizy.com/dutasebojiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/building_floor_plan_software_free.pdfIn PDF document text
    • http://ponazuxunuruko.rf.gd/fokojapoginujimisa.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/besevigetowebevi.pdfIn PDF document text
    • http://meganisaniwo.rf.gd/catheter_care_guidelines.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bfa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA1 5612 bytes
SHA-256: 8e277278a81c304c5fb6a3b813fdc4416c99263a92f7473f5b0e8d1dcc94aa66
font_01_sfnt_off0000d2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C7 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off0000de2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2A 10380 bytes
SHA-256: a1c6ee772ca8da231e53483a8c117dfadf8b92f2545f17b700879481e4990318

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