Malicious PDF — malware analysis report

Static analysis result for SHA-256 403045df18d7a992…

MALICIOUS

PDF

73.1 KB Created: 2021-04-03 14:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0e13fd020a8e1934e07c264191703fa SHA-1: d95038d61fcab1935df6c8a715b70784947942c1 SHA-256: 403045df18d7a99255ce93b4d9b373f53948c240db258baa852ab84fb90ea862
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and multiple other URLs were extracted. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though partially obfuscated, suggests a lure related to a cartel, aiming to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wix?keyword=personajes+verdaderos+del+cartel+de+los+sapos
    • http://jutidewolojura.mypressonline.com/united_colors_of_benetton_watch_price_list.pdf
    • http://moneyindia.site/milijofufe45z6n.pdf
    • http://alsamcctv.com/16307257344n3bay.pdf
    • https://static.s123-cdn-static.com/uploads/4409623/normal_5fe32e4c43ca7.pdf
    • http://pakirekugep.scienceontheweb.net/vimugununegowuwo.pdf
    • http://datovufes.scienceontheweb.net/calicivirus_treatment.pdf
    • https://cdn-cms.f-static.net/uploads/4475380/normal_6017aef6a12d2.pdf
    • https://cdn-cms.f-static.net/uploads/4497372/normal_602c11e01d845.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gasolawatovi.rf.gd/57361261853.pdf
    • https://s3.amazonaws.com/gimisorixosu/babijuxoxebetomo.pdf
    • https://s3.amazonaws.com/zagubip/business_strategy_drive.pdf
    • http://minirulo.epizy.com/collection_letter_template_medical.pdf
    • http://megokog.epizy.com/ashcroft_1279_gauge_manual.pdf
    • https://s3.amazonaws.com/vawoginele/nelixerarorozikarakedod.pdf
    • http://dusilasazeli.rf.gd/mathematics_book_grade_12.pdf
    • http://giwigevo.rf.gd/pikizuxeribidu.pdf
    • https://s3.amazonaws.com/viromibukoleliw/what_are_tricky_interview_questions.pdf
    • https://s3.amazonaws.com/lazolu/avast_internet_security_free_license_key.pdf
    • https://s3.amazonaws.com/kovilowab/dota_2_heroes_lane_guide.pdf
    • https://s3.amazonaws.com/masevewi/biwaxurojonululesuxo.pdf
    • https://s3.amazonaws.com/legobegutulo/ms_excel_tutorial_for_beginners.pdf
    • https://s3.amazonaws.com/joterige/how_to_use_worldedit_schematics_single_player.pdf
    • https://s3.amazonaws.com/muvarelo/31850518157.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df0d.bin
fb81cb8d5aed3f8fc89a779dbc89e42ba84ac4df2c2592a9905d9ff24e30de3f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF0D 5204 bytes
font_01_sfnt_off0000f0dc.bin
e7b1babc309541edf1a3e9f8f65b8822fe73ac9e358d5661fb508d26b6444147
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 11108 bytes