Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b266f6629809b3…

MALICIOUS

PDF

99.2 KB Created: 2021-05-03 13:09:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8627829b7daae27a47f915cd475f03ad SHA-1: bdd59a897899339c8eee9ac1474831c5dbda8203 SHA-256: a8b266f6629809b3d9bbe2e6fe7cc2aa614786b727d9dc269951693ecf31db08
136 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely attempts to trick the user into downloading a password-protected archive. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for malicious JavaScript execution, commonly used in PDF-based phishing attacks to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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
  • 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://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/dfed1102784cc9db4372f309c5eb507d/83417959091.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/aa8ab79345eeb3a8a0927215a72b2b7a/xavumalixamimi.pdf
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080ecf657807---41665037880.pdf
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072272214e6e---pebekujakajepezexaz.pdf
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/g1bqc3497nnqth0ig43atf3er2/pubatenivuwo.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/17754c3df39e1c3dc36825a6bc08b461/58659405480.pdf
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/5nn6b36le5m97ha3ob1p99ri2e/13492068106.pdf
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/p91dd90u8ag1fg4oh22i74qnko/7241815346.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/0cf638d0f705c5539ddc1b851c0da53f/93767134844.pdf
    • http://anhuishangbiao.com/upload_fck/file/2021-5-1/20210501210713149797.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/6c4b18620bbacf73578fd7ef755ee2b7/dikadivafatato.pdf
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160712c98f3612---panawodob.pdf
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608e133c893f9---xuliwukamo.pdf
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160809a6e170a4---76395694128.pdf
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/8a179f3a2d6bb220390faf26973bb2b1/ruxigidavilofaburamepuxix.pdf
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/ab75135f814297671519ff5c84de70f5/62923470164.pdf
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/9c8403a8350739fa160b852831757ac3/55098593663.pdf
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808b353127f---wijurujesesijelalogofujex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=raja+babu+video+song+bhojpuri
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013907.bin
57cdd0aa46d570f9a8f4201975614dd8b64eeb021a9e0e412d560fdfa465d963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13907 5276 bytes
font_01_sfnt_off00014ae6.bin
be669eab6c385b61c7acf95e2bc1ef392057905708fb023384902d092e8491a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14AE6 10872 bytes
font_02_sfnt_off00016ff8.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16FF8 4324 bytes

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