Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebb99c0ebbfaf4e…

MALICIOUS

PDF

259.9 KB Created: 2021-03-21 05:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3d9ca1e9cb2966d7005d77e1ca94ca1b SHA-1: 387dc3dd2b9771d6116571cc79319886eae444c6 SHA-256: aebb99c0ebbfaf4ea076b54ab025b66260fe1bf1296c91296e6af63af01b980c
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 0.9726

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://kuzutuzo.ru/award?keyword=english+to+french+alphabet+pdf PDF link annotation
    • http://lessonsonline.site/beachcomber_hot_tub_manual_2006bpjrn.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/fenigivaxurematum.pdfIn PDF document text
    • https://lojodisomu.weebly.com/uploads/1/3/4/0/134042672/zubiwimoj.pdfIn PDF document text
    • http://tersq.fun/tikojizumuraboaqq1w.pdfIn PDF document text
    • http://reduslim-official.website/descargar_bluetooth_para_android3xvlb.pdfIn PDF document text
    • https://jasugigikimodo.weebly.com/uploads/1/3/1/3/131383258/bobiwaxipixonajefig.pdfIn PDF document text
    • https://jexafowasefuxuv.weebly.com/uploads/1/3/4/5/134588667/8551288.pdfIn PDF document text
    • http://zhenskiizhurnal.ru/jumetevub3b07i.pdfIn PDF document text
    • https://telogedibosujo.weebly.com/uploads/1/3/1/4/131438044/08d2e0dcf5a.pdfIn PDF document text
    • https://zenisitidijo.weebly.com/uploads/1/3/4/3/134309999/5658123.pdfIn PDF document text
    • http://vijufik.iblogger.org/lupezo.pdfIn PDF document text
    • https://kobizixudowizeb.weebly.com/uploads/1/3/4/4/134402546/rudosukiz_xuvevadifusino_fopajifetawuwaj_dezefogatun.pdfIn PDF document text
    • http://moreprodukti.com/mogubabis75ary.pdfIn PDF document text
    • http://pasendapp.online/challenge_rating_monsters_pathfinderviveq.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/purufiz/bluetooth_keyboard_android_to_pc.pdfIn PDF document text
    • http://baruluzibovog.epizy.com/nalivokimofesudemur.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/cdphp_medicare_choices_vaccine_coverage_guide.pdfIn PDF document text
    • http://lopumupukerodu.epizy.com/binomische_formel_allgemeine_form.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000384a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x384A1 5300 bytes
SHA-256: 91efc5bd9f3354e56f25ca8f458a3f3eac0c903aeeb50d33bd2787b6cd50aed0
font_01_sfnt_off00039693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39693 21008 bytes
SHA-256: e98e0d57133961bba361ab87364984e308029bc632833acf894c8815e8cb4aa7
font_02_sfnt_off0003d56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3D56E 18616 bytes
SHA-256: 28198982778b2f5832ea8d8791e4893790b97faa02a6188f7fa7baea111c9499
font_03_sfnt_off0003f332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F332 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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