Malicious PDF — malware analysis report

Static analysis result for SHA-256 41b2229b5244b424…

MALICIOUS

PDF

70.0 KB Created: 2021-09-19 19:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 35232999135e19dbdee0a5786ada7bf4 SHA-1: 16a8767b6a2bbc809bb242c383a0540fd292c97c SHA-256: 41b2229b5244b424952f9d118badb30cc0eaf8704c0f3253897083322790fa5c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external links, many pointing to potentially malicious domains, indicating a phishing or malware distribution attempt. ClamAV detection and ML classification strongly suggest malicious intent, likely involving the execution of JavaScript to facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://obasekiestates.com/UserFiles/file/vagebazugodureruvet.pdf
    • https://mimpishiodua.com/contents/files/zavurezopedenagu.pdf
    • https://u-spot.biz/js/ckfinder/userfiles/files/wezina.pdf
    • http://sandlnae.com/data/editor/file/86762960446.pdf
    • http://casaperugia.fr/userfiles/file/73520274426.pdf
    • http://apmnir.ro/fckfiles/file/taremoxa.pdf
    • https://cbdc.co/uploads/ckfinder/userfiles/files/wufipewipux.pdf
    • http://larben.cz/media/images/upload/file/buvikizesuturumido.pdf
    • http://sensor4you.com/fckeditor/editor/filemanager/connectors/php/fckeditor/upload/202109/file/67669644743.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161409ec9bbf25---kovimakozugepuzeromug.pdf
    • http://bzws.zhanyougame.com/ckfinder/userfiles/files/sisatawurefulufuvilex.pdf
    • https://dutchfansitenetwork.nl/ckfinder/userfiles/files/luwevomuk.pdf
    • https://kfk-dekoration.dk/images/uploadedimages/file/woxiwumupopavilugexepez.pdf
    • https://mimpi1pusat.com/contents/files/62593127395.pdf
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/076891d6fbfadd8d4ccf5338db9556da/74759757934.pdf
    • http://barcelonasixtytwo.com/userfiles/file/53340582186.pdf
    • https://tourpon.kr/FileData/ckfinder/files/20210905_D0BFEFEA8A2F8836.pdf
    • http://bobas24.pl/Upload/file/fivawemikuxujop.pdf
    • https://birudongker.com/contents/files/48176092583.pdf
    • https://atlastoursntravels.com/userfiles/file/patabuzoti.pdf
    • http://cnwt.mgo.cool/upfile/files/2021/09/16/xomakatesutigefiz.pdf
    • https://studioconcept-stand.com/fck_userfiles/file/rarapiwikufegalufapi.pdf
    • https://zakarpattya-tour.com/upload/87496914015.pdf
    • https://fultoys.com/userfiles/wumolasimuzizebilosatopi.pdf
    • https://tbsva.org/Upload/files/20210916182618.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=screen+size+galaxy+m32
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b39e.bin
4a6543c288bf59a5ebe423c1adb717c3e5c9e2e2a63c2c7ce28fcc9003b29796		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB39E 11000 bytes
font_01_sfnt_off0000cd41.bin
3d0dd380887b576872f20244e4bb2fd3dd0d3860a4adf82225b24d55d6828e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD41 14668 bytes
font_02_sfnt_off0000f1f6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F6 16792 bytes

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