Malicious PDF — malware analysis report

Static analysis result for SHA-256 51fc91d9b20bcdcc…

MALICIOUS

PDF

73.7 KB Created: 2021-03-04 06:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5dfbd6b58d4298d99569bb2f52634753 SHA-1: 58e539bb27dc33f92e40ef7b376378deb3a45b18 SHA-256: 51fc91d9b20bcdcc910ad6e43f1f0bcce194e078d5111b32763e5a61d37d58fd
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 0.9998

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://fokemale.ru/wix?keyword=ymca+broad+street+augusta+ga PDF link annotation
    • http://bafedudovodamo.medianewsonline.com/peledubisesisemeba.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/79702610849.pdfIn PDF document text
    • http://poruzur.iblogger.org/qradar_dsm_guide_7._3.pdfIn PDF document text
    • http://begdas.fun/how_to_describe_eyes_poetryih3n0.pdfIn PDF document text
    • http://dajexori.mypressonline.com/how_to_forward_centurylink_phone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jovebagubalolif.epizy.com/feliz_navidad_lyrics_in_english_only.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/zukekalino.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/96985172549.pdfIn PDF document text
    • http://luvojidepezepag.epizy.com/eddie_bauer_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/18073062333.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/78913494059.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/kitchenaid_model_ksm90_accessories.pdfIn PDF document text
    • http://sezajuvijib.rf.gd/najowigusisusexobowe.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/bibb_county_ga_crime_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE323 5328 bytes
SHA-256: 1b025d66dfdea050cde9b10223df2f12cf4300d54cd437d1b880b55ae324674d
font_01_sfnt_off0000f525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF525 10740 bytes
SHA-256: b357c6f5c6326c0cbd6d47ddeb4cc7619b88656559c2f266f7d482721ce8aeb3