Malicious PDF — malware analysis report

Static analysis result for SHA-256 8acd379e895cb501…

MALICIOUS

PDF

64.7 KB Created: 2021-02-11 04:30:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: af1433d978144de2b319cf9b578ea3ca SHA-1: bae1b655064d75fa09b1c80a84bce38735798e95 SHA-256: 8acd379e895cb501a1965931beb7565d9d95d60b1e46ba2e782f617276056e16
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://leonvi.ru/123?utm_term=food+chains+and+food+webs+worksheets+ks2 PDF link annotation
    • http://tixshopclub.space/navy_blue_ems_tactical_pantsdxowf.pdfIn PDF document text
    • http://cybety.xyz/sazapajugekefojasumet1f346.pdfIn PDF document text
    • http://nasty666.space/32477899562uek5b.pdfIn PDF document text
    • http://wiwusigeronisu.66ghz.com/53620432297.pdfIn PDF document text
    • http://rubisteq.online/hor_taew_tak_6_full_movie1f4nh.pdfIn PDF document text
    • http://zespodsvetkoy.site/neo_lms_login_university_of_san_agustine1kpc.pdfIn PDF document text
    • http://joy-todays.online/goxokavi9v17c.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/feborobegibew/rejomotofugoribupaleva.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/63740031967.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/58495915130.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/fitifatul.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/xowodotibakake.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/nefesapuk.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/subegetinus.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/cheekh_episode_16_free.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/38672032412.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_off0000c19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19A 5460 bytes
SHA-256: 4f204d741176a81d215fe1313f5f814bad36a42d157ac23de5b6f33fcda72113
font_01_sfnt_off0000d43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD43D 9856 bytes
SHA-256: 46be4b62cc2292b8a3c19bc2058aa62f8008f8c5227b85ec9e5869ebb1b4c862