Malicious PDF — malware analysis report

Static analysis result for SHA-256 07954aeff413b869…

MALICIOUS

PDF

93.3 KB Created: 2021-06-20 00:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0246b0026169ed83d470581e1ee49407 SHA-1: 583f1ba6fcb462b120164a068bb1fdcd261a9dd5 SHA-256: 07954aeff413b8697f7968ddcbf16c8c7d46655352bd77bc1aef33ff27bc8cc8
156 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Westlife mp3 download'. The PDF contains numerous links, many pointing to compromised WordPress upload directories, which likely serve as landing pages for malicious content or phishing attempts. The presence of these links and the overall structure strongly suggest an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • 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 http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b5d25834d---19209137176.pdf In PDF document text
    • http://evergladesharvesting.com/ckfinder/userfiles/files/wubarenagate.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c028feaf26e---xavufibubotilu.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16099a10573de4---49968356644.pdfIn PDF document text
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160739bb51235d---misapusaramaz.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bfd86ac8d15---wenozom.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076adc62d307---zevok.pdfIn PDF document text
    • http://grawerlik.pl/userfiles/file/93426673524.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/6db49a017853449627f0ab30d74c135d/8205050847.pdfIn PDF document text
    • http://aldo-ins.com/userfiles/file/30114616141.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/f52196fd15155d628a72dd994302d950/25492149403.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d322465d81---35125505759.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/2637t226n5kh2l1ce9sdu4aeod/jukasiwusosesimol.pdfIn PDF document text
    • https://study-abroad-travel.com/ckfinder/userfiles/file/97581270361.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160813787de680---sotunoxamebeji.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607933df8ac38---vinesisunuteke.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=you+make+me+feel+westlife+mp3+downloadPDF link annotation
    • 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://www.gnu.org/licenses/gpl.htmlIn 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
stream_003_off0000f26d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xF26D 16980 bytes
SHA-256: 9429c5416a82a4e66c62e64390243a97fd671ddff61a46c4a9ab589bdbea9953
font_00_sfnt_off0000e026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE026 5372 bytes
SHA-256: 536a3f2150df833767c28781234e3dfb8196272c57329c7634bb9b862d842e46
font_02_sfnt_off0001215b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215B 11400 bytes
SHA-256: 0d2c70486d7e773d06f221eced4c02ce69d6e3cc31ed60b241b63415840d7983
font_03_sfnt_off000147fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147FD 18776 bytes
SHA-256: 9e8409b995ac2b0bb76eb3eb8dd1c90fa55d1c1c8a40bb5daa08ca4080948d13

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