Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c32e2eceade01d…

MALICIOUS

PDF

71.6 KB Created: 2021-06-24 18:17:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fde22fc1ad0ec662095fd6e8cabc31a7 SHA-1: cf466c006ec3bc0b1e75b3e70731787a32fd3da4 SHA-256: 08c32e2eceade01d7e970f50adf42513626282f6a8fc478fb1ffcd32e42cbb67
196 Risk Score

Malware Insights

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

The PDF contains multiple links to compromised WordPress sites, suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade gateway scanning. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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 https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/494cac7f8ed1b1a3cc19d2fa16182a56/29586387121.pdf
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/f1dce8431dab1d148cb3752408a5e630/vuzojamumodazenazobuvewi.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/c4phiur5trf6t6utfbspftu2kj/89025128717.pdf
    • https://balaji-technology.com/userfiles/file/97164035694.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9635164ce1---81312349011.pdf
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/sg8aeg09qco3eeflbiltjdq2a1/poxosusogirazonagimele.pdf
    • https://ihotel2b.com/upfiles/editor/files/42705849424.pdf
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/83706ee95cb87667e0192158a2e03f6c/38679257663.pdf
    • http://tokyoracing.hu/userfiles/file/pawixegaregajad.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/rs0atn9ugo9utrdmdueifkpb44/89970264829.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/d399305193fe608a4d556bd676e4d99d/10080952006.pdf
    • https://a2designbg.com/userfiles/file/22626230193.pdf
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/47kndvdfnoie308pgafip848k8/ligiwikevapatofepipuweko.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085459c23324---59274936156.pdf
    • http://zetrade.cz/userfiles/file/bafoposisagomori.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=resident+evil+4+android+free+download
    • 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_off0000cd8a.bin
00c0a141202c10936ceac8b8df9df75720096dbedde9c5fde8d9f3447cbb363c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8A 2960 bytes
font_01_sfnt_off0000d7f9.bin
325e2802468bdb2cfca505aeeed33e6a5036c4e5d8d25a990078c7da929b4d63
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F9 5148 bytes
font_02_sfnt_off0000e9a7.bin
2b0507b75ad4020692220e0ad3d75a1073d26509a81c3c726f0edab700fd2150
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A7 12280 bytes