Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d63485f24ca15c5…

MALICIOUS

PDF

86.1 KB Created: 2021-08-02 23:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: c70fd9bff325faef9af078b01911f4f7 SHA-1: db9da6247aac123a7556a7a0761f0f17c862f592 SHA-256: 7d63485f24ca15c578212fd686d71e0ec467b8ec18c4d8129c264cce05811eca
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised or disposable hosting domains. These links likely serve as lures for phishing attacks or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://crysiq.ru/uplcv?utm_term=jimi+hendrix+if+6+was+9+lyrics+meaning PDF link annotation
    • http://homestationrealty.com/userfiles/files/bolakusijugu.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c7755d5f155---99499638120.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160e24ab573835---toduwibanuje.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/29248326728.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/h5ioravhidmsa6aegvpej3haa6/xovofaxesutuvopusoderaw.pdfIn PDF document text
    • https://jmcoverseaspvtltd.com/uploads/files/zujakubopugajigij.pdfIn PDF document text
    • http://sllight.ru/design/img/upload/file/32688410742.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/7js18719bmg32cbhc7fa2qncq1/49326548938.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/50721841364.pdfIn PDF document text
    • http://kuzfarm.ru/images/file/74922466669.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a5f08fcee---jusidoxojurisot.pdfIn PDF document text
    • https://cgeminfos.ma/upload/file/41408908384.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1910568107---fikoze.pdfIn PDF document text
    • https://oteaexpert.fr/cite_imgs/file/9982722066.pdfIn PDF document text
    • http://xetaihyundai.net/upload/files/41271944271.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a044e486c17---19944035012.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928eb585ec4---mozolajuzidapajexowasu.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/2me5d7j7nah3h9tt1r865gsaat/28906579514.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f3624b8f4e4---7916260604.pdfIn PDF document text
    • https://12tiga.com/contents//files/bozulefabefeteporidar.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a1d6d8470---21537865551.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/34221819449.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_off0000eb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3F 11332 bytes
SHA-256: c0e14bfc2b1182e9406a000c985d13f47f3c208e60d69c95855d52455633c24d
font_01_sfnt_off00010588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10588 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9A 17548 bytes
SHA-256: 542cff944f153a9597ee4fc5ccf4b5b724ab826bc47a4a0ddd5740c7de9053b7

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