PDF malware analysis — malicious · fa1294932c530737

MALICIOUS

PDF

95.5 KB Created: 2021-06-14 13:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: ea810273d3687129afdf362c18e2783f SHA-1: fe9483090e1505ab79ef9db8744c3addf3dde79d SHA-256: fa1294932c5307373bfe57e05acbd8a0414db9290862d42d704fa32c990fdb42

176 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9468

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
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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://drafthe.ru/uplcv?utm_term=anglican+church+prayer+book+pdf PDF link annotation
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609825199e5bb---93096172672.pdfIn PDF document text
- https://partnyor.az/userfiles/file/38781198054.pdfIn PDF document text
- http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160741c4a953c3---4596151096.pdfIn PDF document text
- https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/ebf4576b7c236dab71f47105ae3591d6/78323629913.pdfIn PDF document text
- http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b566fb5e85a---18886642711.pdfIn PDF document text
- http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1ff6a75810---70139516912.pdfPDF link annotation
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/44f95fa8f3537b5085be911e4c8e5eeb/66203132348.pdfIn PDF document text
- http://beveragesgs.com/userfiles/file/kagirupaxajozixebagesem.pdfIn PDF document text
- https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160a1339ec71b4---dotigukepa.pdfIn PDF document text
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/da78d11297054bb5920f15142facd81f/55341478298.pdfIn PDF document text
- https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/16552ab221afd3539ccfc06a35394254/40581240738.pdfIn PDF document text
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9cf57c327---fikatubaporunuroz.pdfIn PDF document text
- http://zulassungsservice4you.de/bilder/file/nadobowibedipox.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5646c2fa2---numusekifadibafutumog.pdfIn PDF document text
- https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/6a4c9f9ac62521de42c8eb70ef8bbbbb/palazubofowebazunes.pdfIn PDF document text
- https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/9p1m9r6shof9jg6a841qhseabc/fufisilosofare.pdfIn PDF document text
- http://suamayin.biz/userfiles/file/69431029702.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000143a8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x143A8	5536 bytes
SHA-256: `6742ef3d004c55b190830fce17aa5feb209776ad62cc32c61c76264250a836f8`
`font_01_sfnt_off00015680.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15680	11648 bytes
SHA-256: `70c3cfadc99331814c276aa03f201f6e073d1726c94a51b59b90a482486df585`

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