Malicious PDF — malware analysis report

Static analysis result for SHA-256 6463a304de12dd79…

MALICIOUS

PDF

70.3 KB Created: 2021-01-21 09:26:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a7ca7362137702149779e7768b5f23fd SHA-1: 8498d86d88a937eec8b9bac008402afbca30846f SHA-256: 6463a304de12dd79d6c61481f9fac796e7dde25edc5841bf1cd3bb9e4c76082d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to building or construction, which is a common tactic for phishing campaigns.

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://crophysi.ru/123?utm_term=build+porch+roof+overhang PDF link annotation
    • https://cdn.sqhk.co/vodadavubex/nibW0oP/77779376504.pdfIn PDF document text
    • https://site-1176840.mozfiles.com/files/1176840/41223121615.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/hhgiz6C/vumisuzulojuti.pdfIn PDF document text
    • https://cdn.sqhk.co/vonofuguniti/gcrlhe2/rigimagivukipusunaju.pdfIn PDF document text
    • https://site-1173508.mozfiles.com/files/1173508/vopugoxex.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/2Jhcjd6/birthday_cake_recipes.pdfIn PDF document text
    • https://site-1180216.mozfiles.com/files/1180216/mdacne_anti_acne_mask_review.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/DifF3lW/average_prices_for_life_insurance.pdfIn PDF document text
    • https://site-1168299.mozfiles.com/files/1168299/subetilazine.pdfIn PDF document text
    • https://cdn.sqhk.co/gipirukanut/hkdifCg/31714561926.pdfIn PDF document text
    • https://site-1168384.mozfiles.com/files/1168384/momovoxunekuzijemuso.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/somisilegex/mumbai_pune_expressway_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/integrated_mathematics_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/biwulifalux.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/69165700393.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/foxubalaxudavixir.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_off0000cafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFD 5152 bytes
SHA-256: 777d9a5600eb05734326707b2a1a93ddd5c15ec26881f7b32f188e6277d497de
font_01_sfnt_off0000dc77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC77 9900 bytes
SHA-256: 3791bf4865dd3f3e428d3d6bd3d2746fe1b19257c215544b3c4e3f5c25d24086
font_02_sfnt_off0000fe43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE43 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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