PDF malware analysis — malicious · a1f984aecbc7c1ef

MALICIOUS

PDF

78.1 KB Created: 2021-09-02 18:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02

MD5: 4e97402caa0f1715d890a7c31ebfd21f SHA-1: e03add5382ff6f4000bbc1f5cad34d17c37ec5fa SHA-256: a1f984aecbc7c1efba0ad48824f40ef7d01ba20dd2badf48f1f9d6dc18763304

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier suspicious score 0.3497

Heuristics 5

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
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://novichiha.ru/pic/file/sozubowuvaviv.pdf In PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/e15064dd0ba1a76f555fde1c7d466de5/batosigakiwi.pdfIn PDF document text
- https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6df246555---59263011038.pdfIn PDF document text
- http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab9b806cd8---7553928790.pdfIn PDF document text
- https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/1b690d4b592075680ddc12f66dc8ed14/gakovenafoji.pdfIn PDF document text
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16089217e4484b---63225003160.pdfIn PDF document text
- https://hoakhanh.vn/uploads/image/files/27612160360.pdfIn PDF document text
- https://agroadvanced.com/app/webroot/newsletters/editor/files/33287220682.pdfIn PDF document text
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/7dced80c4cdd48a5593ec90469544020/nenesosefol.pdfIn PDF document text
- http://cck-brno.cz/ckfinder/userfiles/files/46449836704.pdfIn PDF document text
- http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1610a0197269e3---83409708379.pdfIn PDF document text
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607899bd77b0e---nunevofab.pdfIn PDF document text
- https://dehayemek.net/upload/ckfinder/files/wekoxuvozus.pdfIn PDF document text
- http://22743333.com/userfiles/files/saxosimalunuziduninoxez.pdfIn PDF document text
- https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a42d6ddd---jerododenolotozavilaw.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c88fd961fe---gojitamewinemojomadojede.pdfIn PDF document text
- https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/e79fb3feca2a8baa662b797089c3336b/27743059536.pdfIn PDF document text
- http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/un8cpjqt6phoo1hvqi1ukfa2nj/59470408900.pdfIn PDF document text
- http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/beberidigil.pdfIn PDF document text
- https://cfaegaianascente.pt/portal/userfiles/files/98991114860.pdfIn PDF document text
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f628c833c---wejomapegu.pdfIn PDF document text
- https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8ce47eead4---meledabaja.pdfIn PDF document text
- https://abe-rdc.com/userfiles/file/fisowikufufuni.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=le+milieu+naturel+americain+pdfPDF link annotation
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ed10.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED10	10552 bytes
SHA-256: `46c9439351419ff30c535d677ee8093e4a8329f0fef039fc0a2eb9d4b382366e`
`font_01_sfnt_off00010501.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10501	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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