Malicious PDF — malware analysis report

Static analysis result for SHA-256 1216ac0325a87ab8…

MALICIOUS

PDF

58.0 KB Created: 2021-09-26 05:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e6915525e53b1639ea7e39af33232ac0 SHA-1: ae19b81709fa96a0d5cac70ef790209579042ab4 SHA-256: 1216ac0325a87ab8cf249f5dcfe4a83fb32853445d1fbac9e9a62f1327de7eb0
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Phishing.Trojan. The document employs an image-only lure, typical of phishing attacks, and contains embedded JavaScript. It redirects users to external URLs, many of which are hosted on compromised CMS uploads or disposable domains, suggesting an attempt to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6508

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 58 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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
  • 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://crysiq.ru/uplcv?utm_term=zombie+faction+mod+apk
    • https://justforjetscatering.com/userfiles/image/files/55276968447.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/161484d444a62a---xasujaxubejediwatibug.pdf
    • http://autosoftware.company/autoresponders_images/files/lutewejevowugaso.pdf
    • http://cosonhuath.com/hinhanh_fckeditor/file/xusezego.pdf
    • http://mylodge-naoshima.com/images/blog/file/11446927341.pdf
    • http://togul.org/sites/default/files/file/73545101844.pdf
    • https://baoyi-chuck.com/ckfinder/userfiles/files/renarajevetikoge.pdf
    • http://artsar.pl/userfiles/file/tujeputudixanejorut.pdf
    • http://agierresrl.it/userfiles/files/12067578719.pdf
    • https://www.creativetalentnetwork.com/ckfinder/userfiles/files/rodemagujanotegaboton.pdf
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/fdd22c5df9acddebee3d85cac8a74e71/fonow.pdf
    • http://bmfjhjk.friend-match.com/upload/files/68539819740.pdf
    • http://zonazero.es/userfiles/file/53814441423.pdf
    • http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/wetakij.pdf
    • http://deauville.ru/files/file/tobomi.pdf
    • http://www.mananthavadynorbertines.org/www/js/ckfinder/userfiles/files/nuwaxawuxafeparutafop.pdf
    • http://sz-nuoyi.com/Upload/file/2021091605030898879.pdf
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/82406e277544bdfb7d2b9bde887a938a/59136863726.pdf
    • http://workcoop.org/fckeditor/userimages/file/20210903214635.pdf
    • http://krcatikyonetimi.com/userfiles/file/gadavowokirosapun.pdf
    • http://opersan.com/file/rusajo.pdf
    • https://acgroupenterprise.com/userfiles/file/45983405529.pdf
    • http://scbczy.cn/up_files/file/20210922_185743.pdf
    • http://studionegro.net/userfiles/files/50676017183.pdf
    • http://sunwisechem.com/Uploadfiles/files/42526546803.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000af4d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF4D 16792 bytes
font_01_sfnt_off0000c764.bin
919ba1099d528f4a40cea2e6362ca0a6c15f1e7034ca4e9d5b4fc1c0b9de2f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC764 10664 bytes

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