Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f48cd9d983a66f…

MALICIOUS

PDF

82.2 KB Created: 2021-09-14 14:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 13b3712841971a50965889b85f1b4c89 SHA-1: d72f74009921c611709d6d45f48401324630006d SHA-256: 30f48cd9d983a66f58877c0da6138c28cfff1c24331ead032bfda5599b9b1380
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to potentially compromised websites or phishing lures, specifically mentioning MFA/one-time-code harvesting. The embedded URLs suggest a phishing campaign, possibly related to credential theft or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://drafthe.ru/uplcv?utm_term=legit+gta+5+money+generator PDF link annotation
    • https://www.area-tlc.com/public/ckfinder/userfiles/files/fefutelobokopon.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133d573dab39---55210894372.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/88166761772.pdfIn PDF document text
    • http://goldcoil.com/uploadfiles/files/29587469032.pdfIn PDF document text
    • http://sweet-sugar.de/images/uploadedimages/file/begisapigurovalotamubaw.pdfIn PDF document text
    • http://cargologicru.com/sadm_files/tovuvamal.pdfIn PDF document text
    • https://vialivonica.eu/userfiles/files/66301599948.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/nipolidoluzanevipazi.pdfIn PDF document text
    • http://fotografieindex.nl/images/uploads/61951515647.pdfIn PDF document text
    • http://naszemotyle.natura2000.pl/imgturysta/files/18143099503.pdfIn PDF document text
    • http://studiomarazzi.eu/userfiles/files/74702376880.pdfIn PDF document text
    • https://agrimal.pl/userfiles/file/magojit.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/27935450825.pdfIn PDF document text
    • http://border-collie.ru/sites/default/files/file/japuvibepomipanuxo.pdfIn PDF document text
    • http://helenhotel.vn/upload/files/75316100364.pdfIn PDF document text
    • http://suspensionestg.mx/userfiles/file/vepurozidakigerejatumit.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161324e9b72a12---zurugojofubunidisulumek.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/46453645312.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/fubilexibitomizukukuje.pdfIn PDF document text
    • http://kyochonbuenapark.iorderfoods.com/uploads/files/sasagofifupibad.pdfIn PDF document text
    • http://thienminhgroup.com/uploads/userfiles/file/rilik.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/96365717216.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/nijufunibinedetad.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613623e908666---bikodozagux.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/4353769292.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc4245289d---vitiwefidojitozovefa.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_off0000dea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f6bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BD 10444 bytes
SHA-256: cbd442648acc866b6e1f55346d3e4a7909689137a021040cdb8a7dda0819a61c
font_02_sfnt_off00010e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E73 17284 bytes
SHA-256: 31617a7eb52f969803c1a5317fa9a176c0342bded463012e6e97c1e20c17d427

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