Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d63d20c48dbeb9…

MALICIOUS

PDF

89.0 KB Created: 2020-12-19 10:37:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0051712c0a9cb05640ce823c2664e14a SHA-1: 7347262dc052076701d2ba70dafc42a04060355c SHA-256: b9d63d20c48dbeb9310112e36429871fe5a6152da4c2d4a3b3f8315f6947dff2
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high probability of malicious intent. The embedded URL, https://trafffe.ru/aws?utm_term=animals+name+in+english+and+tamil+pdf, is the primary indicator of compromise, likely leading to a phishing or malware download page. The document body, though partially corrupted, suggests a lure related to 'Animals name in english and tamil pdf', which is a common tactic to entice users to open malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffe.ru/aws?utm_term=animals+name+in+english+and+tamil+pdf PDF link annotation
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc3a89988c99b6d37b8817f/t/5fc7d40adfe7bb6ff610f654/1606931467161/90900920268.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/98739579156.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd458912e20d66685e56d5/t/5fdd9286d85ca26442ee3008/1608356487871/vovanakobare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff17d42-768b-40aa-9b9a-e5cc9060ee57/6447199135.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52a78df132613bbd94fd8/t/5fd2053199fe644e8a65b0f1/1607599411778/matrix_organizations_have_a_design_that.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b51b40f1034a5cae9388/t/5fc3ab02145a8629dc20d9f7/1606658818317/angrej_2_full_movie_watch_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/18796218339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e87faa76-384f-44aa-a583-7cb28ff7a42a/2017_biozone_international_worksheet_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdcba3c92f0e27cb84b8f30/t/5fdcbf407ff8e90c28011542/1608302400502/12256748200.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdeed01972c46e3c6420e7/1606282961499/ski_doo_repair_manual_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/best_cover_letter_resume_template.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/addendum_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/capitales_de_tous_les_pays_du_monde.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/mobog.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000da3d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xDA3D 18664 bytes
SHA-256: 5608849d7a358f429b37f9a90a852de098e5ce78ec90f9fac20623fc5f397664
font_00_sfnt_off0000c837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC837 5348 bytes
SHA-256: 664d2a03d42befd5a5bc7b7e63556057ae1af74b936ed1f35aea390cbe9e4af9
font_02_sfnt_off0001030c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030C 10296 bytes
SHA-256: b0203e978701d7ef8afdf12f1b793f7719dd4ffb24c44e6f1fb44919eb372f82
font_03_sfnt_off0001260d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1260D 16104 bytes
SHA-256: fc5061924f4f005b6830c75ca510e8d62075ed65aff4f1aee007076c957b5781
font_04_sfnt_off00013b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B21 7924 bytes
SHA-256: c60845355723a6fd9e484e7811268417eeb11690262702a3e4db2b611836c447

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