Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb98f956b9140eb…

MALICIOUS

PDF

66.5 KB Created: 2021-09-16 02:18:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0fd86998d5df107ca6423fbe1a5f6319 SHA-1: d75d07f790f729f68473ce39d063643e18f6435d SHA-256: bbb98f956b9140ebbae9d65d546e128225165e51399cb6106f23b6f072d7fa49
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains an image-only facade with a clickable action, typical for directing users to external sites. Numerous URLs were extracted, many pointing to disposable hosting and link farms, suggesting a campaign to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • 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 66 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • 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://huntic.ru/uplcv?utm_term=jawwy+tv+apk+for+smart+tv PDF link annotation
    • https://tagoproperties.com/ckfinder/userfiles/files/94693485598.pdfIn PDF document text
    • http://melvin.cz/data/91767948216.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613fd755ead29---88816570342.pdfIn PDF document text
    • https://kingyao.com/uploadfiles/files/20210912_095441_6511.pdfIn PDF document text
    • http://sun-green.de/ckfinder/userfiles/files/64939701450.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139a0c7df671---birixuruxukukej.pdfIn PDF document text
    • https://fasaac.org/temp/files/28217902038.pdfIn PDF document text
    • http://positiveforce.in/uploads/files/vadelasunolifis.pdfIn PDF document text
    • https://axlthailand.com/imagexx/files/wapil.pdfIn PDF document text
    • http://blackhorsesc.pl/userfiles/file/40218349398.pdfIn PDF document text
    • https://hotnewsmd.deca.md/upload/userfiles/files/94048512746.pdfIn PDF document text
    • https://jasmijnbloemengroen.nl/userfiles/file/31613002914.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/33344078782.pdfIn PDF document text
    • http://drzwiukryte.pl/userfiles/file/2381401353.pdfIn PDF document text
    • http://kingsfci.com/userfiles/file/96313080653.pdfIn PDF document text
    • http://kerekesvillszer.hu/UserFiles/file/86866606474.pdfIn PDF document text
    • http://greenlivinggarden.com/htdocs/UserFiles/file/koxelegimitogawewolude.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/59218833591.pdfIn PDF document text
    • https://camping-du-lac-dijon.com/userfiles/fichiers/27643529993.pdfIn PDF document text
    • http://zhongyuemedia.com/filespath/files/20210907025624.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_off0000a8d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D3 14004 bytes
SHA-256: e3136f012b23091668d28a4b9fc20b5fb58bb60c3f2218590dc0f42a9bb78f69
font_01_sfnt_off0000cb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB92 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e3a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3A9 10492 bytes
SHA-256: 426488cf60f00d3b759d35f59f9a6a3fc6cacb73b94a4d1bd1a76100a9b9f839

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