Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e08b8ad9fa2b1f5…

MALICIOUS

PDF

83.6 KB Created: 2021-08-19 11:35:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 65d3080a62791ef9ce41b2cb8532e8d6 SHA-1: 5c9254cd7f172d130b2094b20b3bac3cb3b2c87a SHA-256: 2e08b8ad9fa2b1f55c05c8cefd219246f89f211fdd515aadbb5975d1fa5a0843
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to various domains, many of which appear to be compromised or disposable hosting. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to download a password-protected archive, a common tactic to bypass gateway security. ClamAV detection and ML classification confirm the malicious nature of the PDF, suggesting it's a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/kupivunogunoja.pdf In PDF document text
    • http://mosjob.ru/images/file/8863357210.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b73d42c0399---beniripuvezagominavo.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/up5569au1ktko9qa36bc56m6um/nekadesukilafu.pdfIn PDF document text
    • https://photojet.net/userfiles/file/kafadugimive.pdfIn PDF document text
    • https://groupburuemas2.com/contents//files/wejaj.pdfIn PDF document text
    • http://klubalfa.org/img/userfiles/file/palarejefi.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/20459b76cde4f6f25aadaec52390aa0d/jolesetubivoz.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f068f189a86---78437763654.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/1lshgivu7tn0qgfr8gvengmdni/depiloni.pdfIn PDF document text
    • http://trustycctv.com/ckfinder/userfiles/files/57452460899.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/6ec457f912e8b342a58b983867a4e459/tidozirop.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/9efcbcadf326d5bb3ae10eea76467881/2853966869.pdfIn PDF document text
    • http://archinfo.ru/uploads/file/jasimi.pdfIn PDF document text
    • https://confetti-seasons.ru/upload/files/semujevekowad.pdfIn PDF document text
    • https://asiastudy.in/ckfinder/userfiles/files/20267435143.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/makipivagoxixotam.pdfIn PDF document text
    • https://teenvolunteerhouston.com/wp-content/plugins/super-forms/uploads/php/files/181886e9f3f45cd211bdb4290cd595e4/nimesukoguzal.pdfIn PDF document text
    • https://lescourailleurs.com/upload/editor/file/83868714744.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/vobiwalimudatola.pdfIn PDF document text
    • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/ginilepopaluwile.pdfIn PDF document text
    • http://wangyiphk.com/userfiles/31103699855.pdfIn PDF document text
    • https://tbsva.org/Upload/files/20210807184742.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/ac8c9c9793605bb34182330bbb26aa7e/25680091665.pdfIn PDF document text
    • http://virtualcharityevents.com/vce_cake/files/files/58968050684.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=como+traducir+libros+en+pdf+de+ingles+a+espa%C3%B1olPDF 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_off0000dda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA3 17600 bytes
SHA-256: f5c0197f74f1f58eb7df799cfcebd51bff6ad241b8deb1c521ec765731032d86
font_01_sfnt_off00010a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3F 11440 bytes
SHA-256: 36a590ff59c2beaa001c7bb89275290f678b3f0262382b4384059076b789035b
font_02_sfnt_off00012498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12498 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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