Malicious PDF — malware analysis report

Static analysis result for SHA-256 710fa8a387f6ee49…

MALICIOUS

PDF

72.8 KB Created: 2020-12-18 02:06:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a1dac143f4382ccfbff097439202c086 SHA-1: bcebf30954552dbe2649dc3bb3cea03f772b63b1 SHA-256: 710fa8a387f6ee4990f7bd6a753380fbd22c9d169d331471c287c22bf53f78c7
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=13.2+mining+environmental+science+worksheet+answers PDF link annotation
    • https://dosabaret.weebly.com/uploads/1/3/4/8/134861273/4896570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5f9cdb0d777cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462374/normal_5fb76877472af.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/6110784.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476595/normal_5fc6cd3a0c84c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5fcf04874e874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455374/normal_5fb5169c1d02f.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/remuv/the_expanse_character_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dda31452f90b7fe53205/t/5fc1b21918e72e5fdb176af2/1606529570770/the_memoirs_of_sherlock_holmes.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/tibipoluxekoxoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6dde2d2523e4b70be4817/t/5fcdb447f94b6402b238954d/1607316552571/sinokapu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75E 5716 bytes
SHA-256: 276291f9a25c05f819f6ad1ec14080f951c08e4a4a83659e71130c4091768bcb
font_01_sfnt_off0000dac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 10536 bytes
SHA-256: 8f2ed76ad68c7923f3f9f5ab8e9065a5cb97b3db2c2cdfe69ff9f75558ebbbb9
font_02_sfnt_off0000fee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE1 16060 bytes
SHA-256: df1d2c903cabdf2976887e260da0b25217edeb5ce2b71f315001024534e8e210