Malicious PDF — malware analysis report

Static analysis result for SHA-256 455ba0536205a944…

MALICIOUS

PDF

101.9 KB Created: 2021-08-01 02:46:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 66561ae09f67dee8c0bd855862c4ac77 SHA-1: fc06bf472ecb2c4deee76629d141b1dadeeb15d7 SHA-256: 455ba0536205a944a111fc568f79b0ee138a6bc0693303b6138dce6ad1412b06
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and links to compromised CMS uploads, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are consistent with a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://irlanc.ru/uplcv?utm_term=animated+stories+from+the+bible+episode+guide PDF link annotation
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607dcfd89f42a---lanunobuzuto.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/zitepilikigokafupotag.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/cgj8g8o3ti5jp93c61fj9bb4vo/96302919040.pdfIn PDF document text
    • http://studiotrusso.it/userfiles/files/19423253388.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/fcdfb9babca97eef5a1cb79963baa138/pomujisaxaxuxekeb.pdfIn PDF document text
    • http://agama-rc.com/upload/files/26765081251.pdfIn PDF document text
    • http://yuha.be/_files/file/65759122513.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f6b5ec2f1---56116263670.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/ee5bcedb6ea351520777e8703f0e364c/fozifadili.pdfIn PDF document text
    • http://xn--szabowski-tub.pl/userfiles/file/32897239078.pdfIn PDF document text
    • https://digireg.it/upload/19217819319.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082365b9ef5f---gevodasomamakute.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/2258bc789952ffc8816451c29909ba4a/dirazejuxus.pdfIn PDF document text
    • http://yuha.be/_files/file/63262559919.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/vixivotuvalimiwumoz.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/7v3l71h5mijveocudfuoptbb96/74976958176.pdfIn PDF document text
    • https://1877painters.com/FCKeditor/file/69968701527.pdfIn PDF document text
    • http://mobitransjogja.com/files/dasop.pdfIn PDF document text
    • https://www.arc-welding.co.uk/wp-content/plugins/super-forms/uploads/php/files/jl404eq2ijeu6a0r18m775piej/linonoterotarifoxunasi.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/gabuve.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/nsfkekajqf1s5b4f75h3t32upd/88215162667.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129DA 17648 bytes
SHA-256: dc7fe4aab63511f9f3166277e4ef9976fe646621da849ab23abd83cc36c02e55
font_01_sfnt_off000157f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001700c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1700C 11168 bytes
SHA-256: 072dcc48be69a06666e26c0e09cdf425a798a74857ea390c1d12ff51e0322156

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