Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0bd6955bdb0a668…

MALICIOUS

PDF

81.8 KB Created: 2021-06-19 15:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2477d17235260da11eabc386c917a8c7 SHA-1: 2a35623177922b80799e672f396d485b22254835 SHA-256: b0bd6955bdb0a668ed185e985bd0c6aea51366713618755755912af635cf1c04
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to be a lure related to business plans, likely intended to trick users into clicking the embedded links. No scripts were extracted, but the PDF structure and link farm heuristics strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9514

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://orgue-chantepie.info/FCKeditor/upload/file/sasasovegujobijarodofuto.pdf In PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/6e5082fed1e0be4dca67dd7628c4da49/40935327607.pdfIn PDF document text
    • http://famillespourstarlight.ca/clients/a/a9/a9b42c05011d3bb27e7f7ec2ed30324f/File/81044549729.pdfIn PDF document text
    • http://archimax.ch/dynamic-images/cms/file/46327238711.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/f49f013f2a9b87212ea8dda8f79f6337/risokelukowi.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/42245644790.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/xuwijarogiveroxenapewa.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5dcb82ea5---muvanadaviregu.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/gojowizebogasid.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/6493562851.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4e157e586---luledijupute.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/12077992993afc85f4fefed7cf9f33d8/33310551147.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/nejubi.pdfIn PDF document text
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/8e863e0ad90412582426e130ccf94359/47118530342.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f30fd2725c---rekijezatikazug.pdfIn PDF document text
    • https://baobihungphu.com/media/ftp/file/25917390546.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1608317dab7c48---84766780444.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=lean+canvas+business+planPDF link annotation
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CF 6476 bytes
SHA-256: 5c96381b2956ba85bdc606e02b4bc67750563a6a571ffb0d67253edb336a5a64
font_01_sfnt_off0000f6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D5 4972 bytes
SHA-256: 462e21db8710b660d36d592194091decfefde2136ef5332b00aa01b2fa6b2c24
font_02_sfnt_off000107d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D2 7408 bytes
SHA-256: 63aff32db282c457705215ba13f2e65c4341177c8d91cb69b17443c4e7c1549d
font_03_sfnt_off00012171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12171 11496 bytes
SHA-256: 6c2bd85fe41f509e55c5a2466d17c449809e2b65770fcb60c3c8f19e4fe67442

Open this report in the interactive analyzer, or submit your own file for analysis.