Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f0e509628fb387…

MALICIOUS

PDF

83.6 KB Created: 2021-07-04 19:15:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cb20df6e6e672505c25970941b704cd6 SHA-1: 47cd960408be29b5821b9104d8810c2e59b38c8d SHA-256: 07f0e509628fb3874cb06bca845edc7d166427d36ea707930e517bd656348f9e
176 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV. It contains numerous links pointing to compromised WordPress sites and IP addresses, suggesting it's part of a phishing or malware distribution campaign. The PDF's structure indicates it functions as a link farm, directing users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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 http://wib24-admin.de/uploads/file/21739212062.pdf
    • http://mobilesamara.com/img/files/file/ruxilim.pdf
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160709526a0b80---garinetifamuzetujo.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086499d07bc6---ragubamufojukeni.pdf
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087e263f2ce0---lifemibejexabuvekaki.pdf
    • https://melz-feu.ru/upload/winaxexololinilubi.pdf
    • http://loaamtran.com/files/usersfiles/files/vizasirafavumetatefin.pdf
    • http://orderleesushi.com/uploads/files/juzopowa.pdf
    • http://centrons.com/uploaded/file/184654762660caaadc6bd25.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160db768126543---77524636687.pdf
    • http://dalaichau.com/files/tixapu.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/7r1po1d6jq2kcqackcoj7f1nf7/jipafigawadotavurigi.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/dgag1vetgggg5ui9a6iig6b7f7/tawitasikujobedovekavuj.pdf
    • https://villanakarin.com/userfiles/files/badobavitisanowokinur.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16086408666497---lasuzitasib.pdf
    • https://agatanorek.com/files/file/60772092874.pdf
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/64f3b5c9191b4a9c54a1249dd792c0ce/31828946592.pdf
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/a5c7bc7bed97a958c4768f418d848daa/zumigusokokolamosiruju.pdf
    • https://nowbali.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1609eb8e65cebb---85964972851.pdf
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/cd089f2952b99c58dc585c909e9d5a3a/berovaxarudexumifiziwi.pdf
    • http://cka-shiba.com/ckfinder/userfiles/files/winare.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=another+word+for+bombastic
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e618.bin
744ddf99f431c5719557b410df78c4d32ee11bcb8069093b0f41979a0c75ff11
pdf-font-stream PDF embedded font (sfnt) at offset 0xE618 16360 bytes
font_01_sfnt_off00011020.bin
cd6a7aee1afc61a3a14c89527f6c820fcc7d950d2b9384fe3924b1e013c4b7f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11020 10904 bytes
font_02_sfnt_off00012944.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12944 16792 bytes