Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7291f5ac20bdb60…

MALICIOUS

PDF

82.7 KB Created: 2021-09-08 23:02:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 6d4b2e80be810cf320c52936e0007600 SHA-1: ddac15f12da2ced24080500c80f2d728bedcff21 SHA-256: e7291f5ac20bdb60f9ed0d639692256b9f78260ade81597000eac47d4e878599
126 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous external links, with one specifically pointing to a URL containing 'android+gem+miner', suggesting a phishing or malware distribution lure. The PDF structure itself is also identified as a link farm on disposable hosting, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://archism.ru/uplcv?utm_term=android+gem+miner PDF link annotation
    • https://livre-d-art.com/ckfinder/userfiles/files/zowidizarig.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea5f433d94---munafesubirezaxenudenujo.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/nenoripekonoweju.pdfIn PDF document text
    • http://ketnoikienthuc.com/upload/files/goragasurasubojiredira.pdfIn PDF document text
    • https://varida-tech.com/ckfinder/userfiles/files/38700545445.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/74f76c75d2afc199caa3354590bcbf33/28135265723.pdfIn PDF document text
    • http://movietek.vn/hinh-anh/files/japiwizisovixexosijom.pdfIn PDF document text
    • https://lighthousemacau.com/html_upload/file/97346149832.pdfIn PDF document text
    • http://limobebe.com/userfiles/files/xajujojotegidorufumatafi.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/2524127510.pdfIn PDF document text
    • http://www.sushmitamukherjee.com/fckimages/file/28221979794.pdfIn PDF document text
    • http://partnerplus30.ru/images/fornews/files/pujasoramomomawekixivubij.pdfIn PDF document text
    • https://huangs.tw/uploads/files/202109021707384728.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/toxegowagaturitovekeduto.pdfIn PDF document text
    • http://alanaf.ru/userfiles/files/vomofe.pdfIn PDF document text
    • http://irpuyesh.com/cache/fck_files/file/84670157517.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/22343266586.pdfIn PDF document text
    • https://mldom.xyz/web/img/podborky/files/dibep.pdfIn PDF document text
    • http://stickerbarcode.com/file_media/file_image/file/65955111940.pdfIn PDF document text
    • https://mekongtransport.com/upload/userfiles/files/27431880807.pdfIn PDF document text
    • http://ekvatorbl.com/userfiles/file/josurerudotowaku.pdfIn PDF document text
    • https://stiglic.sk/userfiles/file/nefagumimeden.pdfIn PDF document text
    • http://dongtienlamnghiep.com/upload/file/julepaxajapas.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_off0000e0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DF 17888 bytes
SHA-256: 0a99716387ced3299a780796801311b40503fb398067181c23a84c3b8bf6e506
font_02_sfnt_off00012790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12790 10096 bytes
SHA-256: 465206fdf6b82cd9ae8cffee525e9bddaf40a1ea742bd71ac509107570892720

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