Malicious PDF — malware analysis report

Static analysis result for SHA-256 002bdbadbb7daa1c…

MALICIOUS

PDF

81.5 KB Created: 2021-09-21 03:33:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 658f59654dc6ea008f07e0627fe4fc45 SHA-1: 29fa8b7a05de54f2601e064ab3148530f505010b SHA-256: 002bdbadbb7daa1c948b2a02da880073f2bfa33edfa2743639ae3ee7375d9df0
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple external URIs, indicating a malicious intent to redirect the user to potentially harmful content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick users into believing they need a password for an archive, a common tactic for delivering malware. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://archism.ru/uplcv?utm_term=teams+portal+office PDF link annotation
    • http://oryginalnedekoracje.pl/userfiles/file/83485403477.pdfIn PDF document text
    • https://girisimhaber.com/uploads/file/37432525395.pdfIn PDF document text
    • http://suncitygroup.ir/basefile/suncitygroupir/files/85618597105.pdfIn PDF document text
    • https://nikolsbeauty.com/webroot/f/uploads/file/88079632853.pdfIn PDF document text
    • http://abbeytraining.net/userfiles/file/35422339252.pdfIn PDF document text
    • http://www.sushmitamukherjee.com/fckimages/file/josetisasek.pdfIn PDF document text
    • http://stylekd.ru/files/masavimotipitab.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/kovomewodonufujebisux.pdfIn PDF document text
    • http://bakersfield.thepokeluau.com/uploads/files/93991110854.pdfIn PDF document text
    • http://demkapi.com/resimler/files/xiwatawimasejurakogazad.pdfIn PDF document text
    • https://eltechma.com/zdjecia/fck/file/wilujibogobelabofej.pdfIn PDF document text
    • http://pm-ural.com/uploads/files/dolofafomoketofazav.pdfIn PDF document text
    • https://sapporopools.com/contents/files/fanivopagedufotekomulagad.pdfIn PDF document text
    • http://volkshilfe-vlbg.at/images/content/files/51545353197.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613deca28e762---44267681643.pdfIn PDF document text
    • http://grimastone.ru/files/nemevap.pdfIn PDF document text
    • https://silatur.com/js/ckfinder/userfiles/files/68068683107.pdfIn PDF document text
    • https://matrixx.lu/images/zinir.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/76431750021.pdfIn PDF document text
    • http://cjmfgxfollow.morefriendship.com/upload/files/62238245405.pdfIn PDF document text
    • https://mgs-on-track.com/uploads/misc/files/mulozariratuwiletolufuwu.pdfIn PDF document text
    • https://mobspace.xyz/web/img/podborky/files/20610042103.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130ff2d46f03---xizirokaxot.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://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_off0000dac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC8 10500 bytes
SHA-256: 18f98b22c341d508c7bed812b92d494dbf5e5ba38c3eaea6f51df5d391354918
font_01_sfnt_off0000f2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A9 17572 bytes
SHA-256: 597f0952dddeb8998d43e7e4be6d8486899c12e7a9ebc6bf9a23bcaffde84096
font_02_sfnt_off00012032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12032 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1