Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd2d68e0536b587…

MALICIOUS

PDF

84.9 KB Created: 2021-09-09 11:54:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ce690f20f1be3bf7fb08feee874df5e2 SHA-1: 28d423ce8a2cc3c7cecb99dc051f09fac1153d1f SHA-256: afd2d68e0536b587217f7952cfb30cf6f1760188863f1b53065a339400a3e2e4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous external links, many of which point to disposable hosting or compromised CMS uploads, indicating a link farm designed to manipulate search engine results or redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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
  • 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.
  • 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://pixomot.ru/uplcv?utm_term=yeh+jawaani+hai+deewani+full+movie+download+720p+bluray PDF link annotation
    • http://precisionsurgicalworks.com/alpha/ckfinder/userfiles/files/56420228003.pdfIn PDF document text
    • https://andhimazhai.com/images/files/lazazefida.pdfIn PDF document text
    • https://drinkpoint.com/uploads/files/84488668047.pdfIn PDF document text
    • https://vnmmalta.com/userfiles/file/56543424231.pdfIn PDF document text
    • http://kabaretyimpresariat.pl/Upload/file/segoninuvesusozefuselot.pdfIn PDF document text
    • http://hoachattn.com/image/files/34786838138.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/68669770224.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135cac3ed290---14099442230.pdfIn PDF document text
    • https://agri-mal.pl/userfiles/file/lemutokilozatapa.pdfIn PDF document text
    • https://elnativocoffee.com/silver/upload/files/24520261651.pdfIn PDF document text
    • http://zonwering-nederland.eu/ckfinder/userfiles/files/debanasisokeb.pdfIn PDF document text
    • http://take114.kr/FileData/ckfinder/files/20210909_9F531829909AE50C.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/f6a05e862f6417a95c62b5209a82c54f/36495236533.pdfIn PDF document text
    • http://olguanaokulu.com/upload/file/45870521111.pdfIn PDF document text
    • https://nurdagihaber.com/resimler/files/50944309698.pdfIn PDF document text
    • http://nppgursaraijhansi.in/ckfinder/userfiles/files/77218508910.pdfIn PDF document text
    • http://thumpamonpally.com/userfiles/file/doxulesufajakijezomireva.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/42925021046.pdfIn PDF document text
    • http://wuyioutdoor.com/userfiles/file/70300890943.pdfIn PDF document text
    • http://familiehollander.nl/images/uploadedimages/file/99556266712.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/85147939940.pdfIn PDF document text
    • https://noursportevents.com/wheelmarine/userfiles/file/mosedisuvidorojuzes.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137dfe90f378---josovepozunorarimijidebuw.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/161351d9231ff4---mevufiwakole.pdfIn PDF document text
    • http://niengrangchuyensau.com/upload/contentFile/file/20673114851.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/mujililavid.pdfIn PDF document text
    • https://digbijoynath.in/uploads/userfiles/files/11752407908.pdfIn PDF document text
    • https://psg66.ru/admin/ckfinder/userfiles/files/fisemebesirufilidinir.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_off0000d9c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C9 21428 bytes
SHA-256: c78159bccb5b52a73c54c47076c1b20596de868e0c3235839ab9fa2562d66a5e
font_01_sfnt_off0001126d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A84 11408 bytes
SHA-256: 11ddef62fac1ed91c718e8b0b1704cc4cf572d748b514eb415eecc8e73f46ca3