Malicious PDF — malware analysis report

Static analysis result for SHA-256 c75a47d9da90a96c…

MALICIOUS

PDF

118.1 KB Created: 2021-09-13 06:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2b581d42c39ec819bd13c4a0a828d7b8 SHA-1: 94b6041b6c51299d064aa8c2d5fbf9fb764fad96 SHA-256: c75a47d9da90a96c5542b114a264551383f4a0804025a60a2335dbd529ea0af8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs pointing to compromised CMS uploads and disposable hosting domains, indicating a link farm designed to redirect users. The presence of 'utm_term' parameters suggests a phishing or SEO-based lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://allytemp.ru/uplcv?utm_term=famous+five+21+pdf PDF link annotation
    • https://charterboatdeliverance.com/uploads/files/sirejawuwolodotizologur.pdfIn PDF document text
    • https://xn--80apefbdm9ah5g.xn--p1ai/userfiles/jogosunoropejofafugebe.pdfIn PDF document text
    • http://cartonwrappingmachine.com/userfiles/file/vomubopobevog.pdfIn PDF document text
    • http://gz-chengeng.com/uploadfile/files/79239512560.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/9695017072.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/40de7cec8f8fe45e1694c32b7b0a2347/2505819477.pdfIn PDF document text
    • https://szalkasszorutacskok.hu/app/webroot/files/content/files/kedirufaviteraxupewufez.pdfIn PDF document text
    • http://www.siposferenc.hu/html/begelo.pdfIn PDF document text
    • https://alev.az/userfiles/file/wusepesisezofikaji.pdfIn PDF document text
    • https://agroadvanced.com/app/webroot/newsletters/editor/files/nitepimusetegopefikowumaj.pdfIn PDF document text
    • http://ucg-eg.com/userfiles/file/89571446294.pdfIn PDF document text
    • http://dierenwinkelindex.nl/images/uploads/dukokelepiwosaj.pdfIn PDF document text
    • http://kfbma.org/files/fck/file/ziwowutedufufogewofawe.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/zuxogovizavep.pdfIn PDF document text
    • http://culfordequestriancentre.org/UserFiles/file/73687920470.pdfIn PDF document text
    • http://gps-tw.com/CKEdit/upload/files/ruzavaweberowat.pdfIn PDF document text
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/2ba32b337b803b17699254d80cb866f9/fabujuxorizug.pdfIn PDF document text
    • https://cambodiaangkorhomestay.com/userfiles/file/72542727725.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613978eeb8668---kebijatotuwejotemed.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/85534840119.pdfIn PDF document text
    • https://intervalhousehamilton.org/ckfinder/userfiles/files/95433603516.pdfIn PDF document text
    • http://zhongyuemedia.com/filespath/files/20210912035542.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1613999459da02---xoniledaragogusuwove.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/53mv7682pcd6051malfimm43ej/muwamapoxagefivax.pdfIn PDF document text
    • https://iveducentar.com/uploads/assets/file/luxusawivinajawolubew.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/161320020397eb---ruzepeliwurebijilunezi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16734 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00017f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17F46 20032 bytes
SHA-256: 746056076a4cf13e4510ccc22b643e793f474f9618f8c68f9ce4079844f3067c
font_02_sfnt_off0001b22b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B22B 10628 bytes
SHA-256: eff16c25a9e14bf974058bd992ab209155060d29a772f4cb54ab5acc2e0af771

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