Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf0117d80b2047b…

MALICIOUS

PDF

65.1 KB Created: 2021-07-18 20:25:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6ded9f983dbcd566ba56f1ba9f99cba7 SHA-1: 62f3987a8f57b68742f909fbc4657824d389c860 SHA-256: faf0117d80b2047bd72d9e02584c73b7d59235cdb081d1ad0156e9b3d1aac098
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7568

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 https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/7dae8803520beb54fdf90769c7f816d5/zujaxifalojonanudutesido.pdf In PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160800d8728899---28241840980.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/f2fd72ca373374aee854fe4657c5e552/69330734738.pdfIn PDF document text
    • https://synersys.fr/contenu/file/39865776033.pdfIn PDF document text
    • http://controldellaves.com/app/webroot/arxius/file/64703048749.pdfIn PDF document text
    • http://diamondsnspurs.com/clients/12200/File/fusoni.pdfIn PDF document text
    • http://konstruktor33.ru/app/webroot/files/files/sapazoxavur.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b5170885b11---lupiwoganatojiban.pdfIn PDF document text
    • http://pappteam.hu/userfiles/file/tuwixofinep.pdfIn PDF document text
    • https://facades-et-traditions.com/actualites/file/19091244672.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16096503990fc6---39886058275.pdfIn PDF document text
    • http://shsuorui.com/uploadfiles/fckeditor/20210703/file/16252676555901.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/4828179500.pdfIn PDF document text
    • http://mega-stainlesssteel.com/uploads/image/files/44108281636.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/lidotevixilugajeboje.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/farezipul.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60cd9d3bc5---vivinako.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/vl8400c9fseobadnk1sq1ul4tu/56234148762.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/87638867866.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/4479b738237d016139bd4dc678822785/nizirenal.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/xewegef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=write+a+program+in+java+to+multiply+two+matrixPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0DF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c8f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F1 15232 bytes
SHA-256: 0f717ba5a561dbc0f9e725fafe801867648b74fa90394a24c26d11da6f2b60b6
font_02_sfnt_off0000f02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02A 11020 bytes
SHA-256: 2822a275fc1631fa35c86feee130b203a192facaaf4c2d5c8e55d592b503d4c0

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