Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c00881655d4af44…

MALICIOUS

PDF

83.6 KB Created: 2021-09-21 00:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 68d30df7f0076c96bfc4a5726c3ebe9c SHA-1: 139e2cdc4f9e1adca786afdcf5314c96dd23b896 SHA-256: 8c00881655d4af4489766da6824770d3adb699fa37dbe20b0554aeff0e4cea4b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many pointing to disposable hosting, and includes a deceptive download button lure. The presence of external URIs and the overall structure suggest an attempt to trick the user into downloading a secondary payload, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://oniceh.ru/uplcv?utm_term=call+of+duty+apk+mega PDF link annotation
    • http://faisaltowel.com/survey/userfiles/files/29324323428.pdfIn PDF document text
    • http://rwdwebwebdesign.com/img-aim/files/buwuwadam.pdfIn PDF document text
    • https://www.smartfutureexpo.com/ckfinder/userfiles/files/21392488639.pdfIn PDF document text
    • http://bon-mar.com/fck_user_files/file/nofijagoxodulotok.pdfIn PDF document text
    • http://rivucota.com/upload/files/54384042028.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614232efb81df---57761211511.pdfIn PDF document text
    • http://aeon-dev.com/uploads/files/202109162248389063.pdfIn PDF document text
    • https://traffictkt.com/viking1/uploads/files/70404433502.pdfIn PDF document text
    • https://altaitur.com/ckfinder/userfiles/files/rigufavibebiti.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613af8f47021b---jolodolizeverikuxulo.pdfIn PDF document text
    • https://aslplastic.com/ckfinder/userfiles/files/xulakixaxizobuwefesopif.pdfIn PDF document text
    • http://deleeuwputten.nl/site/data/ws/files/42388809299.pdfIn PDF document text
    • http://kelt.pl/userfiles/file/rolederixofikanixola.pdfIn PDF document text
    • http://duonglaohanoi.com/userfiles/file/96639187618.pdfIn PDF document text
    • http://ansatrans.ru/admin/ckfinder/userfiles/files/tekadavivas.pdfIn PDF document text
    • http://maxbrio.kr/files/files/81849392428.pdfIn PDF document text
    • http://capriololaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/guxipigaxul.pdfIn PDF document text
    • http://stensoproject.com/userfiles/files/12464217304.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/judiminasetiwidasukaxixis.pdfIn PDF document text
    • https://xn----8sbcehyodmtf1czh.xn--p1ai/userfiles/file/11381480850.pdfIn PDF document text
    • http://www.nomorcantikjoss.com/file/82335167618.pdfIn PDF document text
    • http://gddfboiler.com/uploads/files/91450812767.pdfIn PDF document text
    • 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_off0000ded3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED3 19148 bytes
SHA-256: da8892d442f12e88f7ffdc8983bb6405760a124fe322b936fcbe1ac32851f84c
font_01_sfnt_off000110c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128DA 10716 bytes
SHA-256: 46f01380373d9b5548e51a789fd6652fc1c97c49c035c19901c38df9ac15f2a0

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