Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96879dbd865ed1e…

MALICIOUS

PDF

215.3 KB Created: 2021-07-07 15:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 8115b10cc168c1f8f477dd92617cd203 SHA-1: 3d4cb5567d660e300e23ce0206d1271615ff69eb SHA-256: e96879dbd865ed1ee81457f0a4f66d8b3bd44b8b19afc786a5253aaf8550fb58
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The 'SE_MFA_LURE' heuristic strongly suggests the document is designed for credential harvesting, specifically targeting multi-factor authentication or one-time codes. Numerous URLs were extracted, many pointing to compromised WordPress sites, indicating a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.
  • 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://quaint-house.com/22241180848.pdf In PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160906e7fd9115---78005584298.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/5hdfu3ar5u4d60899ho546hkn0/54564798301.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d8386a4b9ae---9897383872.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160736947844ba---peneletileg.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/14168442206.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ccdfe2276b9---keredakofuwizejipevasufo.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/fjc3ejrkdqgng2bm3arsitclbg/49781220555.pdfIn PDF document text
    • https://invest.pl/userfiles/file/jofepotukavemosikedodif.pdfIn PDF document text
    • http://rockpapersun.com/upload_mce_image/file/91153250566.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd60303d7e---57586420306.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607abed979e36---70343693835.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/99db6151c15cdd74e98e449d0fc45f36/36246515350.pdfIn PDF document text
    • http://grossfamilyreunion.com/clients/0/00/00c8ca1d7e0432e0ca4c178cf0a97985/File/16872939110.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/tgor0r2os5dtgoqmndov1h1lkk/72882882352.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084d99de51ac---56130529189.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1abc5ce33d---zavepepomidapulozetafuni.pdfIn PDF document text
    • https://kede.org/userfiles/file/99899975698.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089db815324e---xazosul.pdfIn PDF document text
    • http://www.asap-recruitment.net/upload/file/fidopupebak.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/fbb9c1fc7d1df935fa8a4e838779ad63/rarubegupofesuxota.pdfIn PDF document text
    • https://hocaukhudothithanhphogiaoluu.com/asset/site/files/senitabufav.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608efdd730aca---31219346750.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=all+glados+linesPDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002f398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F398 10208 bytes
SHA-256: bc66b90e672d17712792243c65a10ba7d28453506a23af0e68b33f87d1b57efb
font_01_sfnt_off00030a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A55 17344 bytes
SHA-256: f4ff7d4c9c2e1aec5b028fa89392bd340f2087ac9a3d03655cdf2340b6fb2c84
font_02_sfnt_off000337b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x337B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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