Malicious PDF — malware analysis report

Static analysis result for SHA-256 eead081c5e1200f4…

MALICIOUS

PDF

102.9 KB Created: 2021-07-07 23:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 66d909b2117486c90b7f70b00f44e165 SHA-1: b758bc7c0b937645a9ce20e8c113ea72d8a4b2de SHA-256: eead081c5e1200f4db68fe5bc9d7fb31463f772023da082e0e54741577ab9a3b
156 Risk Score

Malware Insights

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

The PDF document contains numerous links pointing to websites hosted on compromised CMS platforms, indicating a link farm designed to lure users to malicious content. The ClamAV detection and ML classifier strongly suggest a phishing or malware distribution intent. No scripts were extracted, but the structure and URL patterns are indicative of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9687

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://garglob.ru/uplcv?utm_term=duffer+meaning+in+odia PDF link annotation
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/2a2961ff2187e2917351463b3a4852ee/lilamumubolidegibuva.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/poramaxa.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/b315742c708a7375bcb1a87f470baf9b/fivokeduponifaku.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/vajijinilifuxapulated.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cf3c646db17---21020844785.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098ce90efac5---rilido.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/6f31029c89c09beb115642f2257173c8/bobutuxutorajewineme.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/dc765feee631f0a2fd8ecdb3fa4c6f79/jufonujegawoduzi.pdfIn PDF document text
    • http://scro.ru/pic/file/26745244654.pdfIn PDF document text
    • https://dietacud.eu/upload/file/kegilun.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737bc02d39f---22997088726.pdfIn PDF document text
    • https://kurtwohndesign.ch/userfiles/files/tavafen.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/50c709bcbb60ca30745254f176388d47/dipanavuxovuxevepomup.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607c98ad8d860---paxusegovivodorogituwixe.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8ce434ddd2869347b4d3fc2d0054c4f9/84895974751.pdfIn PDF document text
    • https://fanaf.comarticle_ressources/file/toserujarabotojara.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dfe4b46632---12455804268.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb35d8d1d9---sazudodazubete.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/xixatejitadiziti.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/fb1d158ff78bd28cf462ca98ef25bd7a/28133535253.pdfIn PDF document text
    • http://studiolegalezullo.eu/userfiles/files/96845319789.pdfIn PDF document text
    • http://m4klynchburg.org/clients/3/34/34420611de4c9c7593cf5e5fe12de6df/File/95191592859.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d5826d2b542---jupanopawamugetig.pdfIn PDF document text
    • http://cisseo.net/userfiles/files/wazutujivirawubesuxoja.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001309f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1309F 19380 bytes
SHA-256: ffd7723438eff222b9b1dc45dde59d46eb5f7cab40ca953b539d0a4432a58272
font_00_sfnt_off0000f38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38A 10488 bytes
SHA-256: a70bf7f32e6d6fd014657035e3824ee27480f892339db5c7c48b501a43ac0580
font_01_sfnt_off00010b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B0F 3464 bytes
SHA-256: a8161c2f5ba9235eb51b4fcc43b6bb219725019365cb8d38f9ec25dfe5ce54ff
font_02_sfnt_off0001188e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1188E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off00015106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15106 24108 bytes
SHA-256: 1122099a9ee559bbfdf0d46f6c18ae96bfdbf4ec27ee57061e2f76134256a4c7

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