Malicious PDF — malware analysis report

Static analysis result for SHA-256 68ecc722be57b71f…

MALICIOUS

PDF

75.9 KB Created: 2021-05-15 00:51:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce0731dd2781bec25788ff5ca1910dae SHA-1: 6a75ac9299274738bcac63d8703d0643620f00f3 SHA-256: 68ecc722be57b71f39a484d9a3d0b15e58ac983125fa56e334ddf98f714615d6
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The embedded URLs and the heuristic indicating a compromised CMS upload link farm suggest the document is designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://allytemp.ru/uplcv?utm_term=human+rights+watch+world+report+2019+brazil
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795705722ec---zemiborumovugevikez.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16090b9ed0cd8b---zimukuvejoxib.pdf
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf98bf0d2a---silijukenimawukam.pdf
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/03f7999268e2f802425c33fbbeebc6ed/43506291217.pdf
    • http://alarcon-v.com/editor_upload_image/file/79326528431.pdf
    • http://aliglobshop.com/userfiles/file/xoruforekunekefulabumibaj.pdf
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/de0ffc99543edb34f0b1daea0caa55ae/semiroriludoxapikalogow.pdf
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084b15d9e4db---gubarutijob.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af168c5d09---14345649912.pdf
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/486e46fc74d39754c1bb8eee81912822/sogowazavebezugikovifaxo.pdf
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3889c8102---99854626155.pdf
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/1v9dks6ana5jbjdtkrfuhpnf9u/vodujumet.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a51da23335---zakuvazazolatumurip.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/04020acca84191da21e735c57b3f44ef/pimajopawawexujatele.pdf
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/b058bab2e574e9be34481fe2731599a3/35391653127.pdf
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/d0140ad9f478f8eea4bf343d2ad8dc68/81836671255.pdf
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608352c27b8e4---98832773554.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3768eb384---68475609465.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e720.bin
4883572ad7953326bc370f4da70d8a014da304e6265200f7204639d287491ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE720 6212 bytes
font_01_sfnt_off0000fc26.bin
abd1718ae2bd77129a8714ddd3445bcfb08cc5d88c127f6fe636b61731cfc4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC26 11476 bytes

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