Malicious PDF — malware analysis report

Static analysis result for SHA-256 065762844986af34…

MALICIOUS

PDF

160.2 KB Created: 2021-06-27 13:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 528c6fc5ac80d89d542298b27e46ca6c SHA-1: fb78043bc97ae49fc1ff57c7cbcbb57f0ecefaee SHA-256: 065762844986af34ffc644becd37c5a5d61d009ed8dc30282b2bae256cdba41b
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a phishing lure, specifically using an invoice or payment pretext to entice users. It contains numerous links to external resources, many of which point to compromised CMS upload directories, suggesting an attempt to host malicious content. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely provides instructions to open a password-protected archive, a common tactic to bypass security filters. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

Heuristics 8

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://congchungnguyenlieu.com/uploads/files/10063362646.pdf In PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091fe8b4b0eb---86866819009.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073917254a33---16417721530.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/68968786873.pdfIn PDF document text
    • http://vinmexindia.com/uploads/gojit.pdfIn PDF document text
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/51c293bee38408702c137933a483851e/zonexi.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/f3ad4d5f02e5f5ea82bdea315db90e6b/12246768178.pdfIn PDF document text
    • http://candientuvibra.com/images/file/38081504649.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9a43279710---19678173369.pdfIn PDF document text
    • https://ka-base.no/images_content/file/48810970631.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/2frfb79d6n4tkav45ssndnoj03/zabobujilukesori.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607824ab831d9---23708226827.pdfIn PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/f88be2098ade31ecfb70cfbb73b814ba/14072102425.pdfIn PDF document text
    • https://rpdev.org/ckfinder/userfiles/files/nekugiruzejekodibem.pdfIn PDF document text
    • https://urbanlivin.lu/userfiles/files/89166350077.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210515033755.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609297593ae72---37881326598.pdfIn PDF document text
    • https://atl-50.com/files/file/nikosotite.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/webunizitigeziduwu.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/7cac22177f062f03dfbc0dbafda9a701/59146949973.pdfIn PDF document text
    • http://luingpyrex.cz/foto/Image/file/8720703290.pdfIn PDF document text
    • https://dm288.com/slicice/file/77003097326.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/gubepezawosejelezajonukem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=how+many+steps+a+day+to+burn+1000+caloriesPDF 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://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_off000210db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x210DB 18212 bytes
SHA-256: cd80cfeb9b49be18cbc8b9b74481f8711b11a9b2d21d413b23d09cfd4f346d68
font_01_sfnt_off000240a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x240A9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000258c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x258C0 11280 bytes
SHA-256: c6f2c09b5d72055aa09711822b8a8e948663e795a0add5867fd029ebf1f4f70d

Open this report in the interactive analyzer, or submit your own file for analysis.