Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6a03dac21df51b…

MALICIOUS

PDF

70.8 KB Created: 2021-09-28 11:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 2dd3f000cfd08a7a5c255d8a5057e58c SHA-1: e264a839d539fefdb78817a8833a5397e5791215 SHA-256: bb6a03dac21df51be871babe02276c23abade8e75be71ce5f5a484015aba3c04
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains embedded JavaScript and a large number of external links, many pointing to compromised or disposable hosting. The links are presented as a lure, disguised as a download for 'Prince of Persia: The Two Thrones', indicating a phishing or malware distribution attempt. The embedded JavaScript likely facilitates the redirection or download of a secondary payload, contributing to the overall malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • 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.
  • 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 https://crewmak.ru/uplcv?utm_term=prince+of+persia+the+two+thrones+mission+download PDF link annotation
    • http://hoachattn.com/image/files/94151591014.pdfIn PDF document text
    • http://klusjesindex.nl/images/uploads/dijitazojedosevolasala.pdfIn PDF document text
    • http://www.slappedtogether.com/editoruploadfiles/file/27485590744.pdfIn PDF document text
    • https://www.sterlingsez.com/ckfinder/userfiles/files/29851599219.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/0gjddc3ipaah02v1d1ufkjlu0b/xulibivesudek.pdfIn PDF document text
    • http://sartor.ru/upload/files/75664064192.pdfIn PDF document text
    • http://youandisagenix.com/ckfinder/userfiles/files/81786763562.pdfIn PDF document text
    • http://9jamail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/zafomodasogerukasudu.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210906234803.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/92bcabd34e8123f4b61464a35aa98ab9/bafokevejiwamujixobofo.pdfIn PDF document text
    • http://okgwa.net/50/files1/file/31683426673.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/16151b60031dff---zofaxukijevumoxota.pdfIn PDF document text
    • https://nicklason.se/ckfinder/userfiles/files/vatidukefuzeliluvizimun.pdfIn PDF document text
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142f42621203---67270394799.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021091103341214.pdfIn PDF document text
    • https://resepangka.org/contents/files/93464945163.pdfIn PDF document text
    • https://emmaushuis.org/pages/kedajozumefuwune.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/nowupipagoxokiwovuzoxafef.pdfIn PDF document text
    • https://doluhosting.com/calisma2/files/uploads/jonagojade.pdfIn PDF document text
    • https://razredna-nastava.net/files/97533077048.pdfIn PDF document text
    • http://skyrunarser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210916123540011633amf5v2.pdfIn PDF document text
    • http://mezon.jp/userfiles/file/zefijibuduroxo.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_off0000b24f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB24F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ca61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA61 16556 bytes
SHA-256: 914ea2d4d24424e00b60eb5242e19a0bea88a84cbf5b30b32c529986c34ef23a
font_02_sfnt_off0000f421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF421 10972 bytes
SHA-256: a85cc49f9f0b6114908aac0aa756d136858789da8ed45f503baceadbb2f46211

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