Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2119b3b3764021…

MALICIOUS

PDF

74.4 KB Created: 2021-09-03 06:15:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: aeb7bd013ceae627143c1f758779ae1b SHA-1: cc66c77f52f2038261048da30cab86f20a851323 SHA-256: 7a2119b3b3764021cb603c827e5a8431a6538cad02c723935be634028457f748
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, including one pointing to a raw IP address and others hosted on compromised WordPress sites, suggesting a phishing or malware distribution lure. The presence of embedded JavaScript, though not fully detailed, indicates potential for malicious scripting actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://oniceh.ru/uplcv?utm_term=beginner+english+workbook+pdf PDF link annotation
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/c051bd30983761ed3e3e979c33ffeff6/65501097594.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1609808bdd6d3e---kolaberanowegogomebafute.pdfIn PDF document text
    • http://sspvjd.com/FileData/ckfinder/files/20210801_DA569829E7D298F3.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/hhqam08qu9plbvml9up6e9nmmv/kivepudilisin.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/dac8069b9461f454ea8d7a5ed45c5434/47911683751.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/ec1fbeeb4c0b82bbfd7192a8282d7f23/pokuvizopegutexevuw.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/vorasu.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/675150773.pdfIn PDF document text
    • http://wisdomtours.net/upload/file/vodibopowuvuvigivuk.pdfIn PDF document text
    • http://amuseonline.com/absite/userfiles/file/patakofugazasikuzobolag.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/a162578550427644de522dc04ce7de7d/kitok.pdfIn PDF document text
    • https://themalc.org/files/file/98478774047.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b1042b480---43008241686.pdfIn PDF document text
    • http://1carl.com/userfiles/file/69412255428.pdfIn PDF document text
    • http://poongdung.com/FileData/ckfinder/files/20210627_79DC6D34B7966067.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/podunujivose.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/pidanefufo.pdfPDF link annotation
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba28b1f10e---xejagidere.pdfIn PDF document text
    • http://berbun.com/user_img/file/wowivomaxuwumaloni.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/vovupomabu.pdfIn PDF document text
    • https://kiemtoandongnghi.com/public/plugins/ckfinder/userfiles/files/85246703767.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/77491504357.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/c7fa3eded382e3aee438864a0c49a727/25621503650.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_off0000be26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE26 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD638 17432 bytes
SHA-256: 7753afef764cf37d21fff1729c42289cbad2a226263f3c9e86312470675b6c52
font_02_sfnt_off00010352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10352 10888 bytes
SHA-256: 0a69745bdea5917fa148df61887851a258e640eee90eeb3d0bf201a61b199950

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