Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e812c3c786d2c71…

MALICIOUS

PDF

72.3 KB Created: 2021-10-03 12:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: b9d191703780396191fea02af6887a32 SHA-1: 11374adbd50548db26bbf49e8002e2e4cbb1ab75 SHA-256: 6e812c3c786d2c71e3b5e6fd75bf726b92199bc0073bcaa41ca855c8d25441af
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external sites, many hosted on compromised or disposable domains, suggesting a link farm designed to redirect users. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security and deliver malware. No scripts were extracted, but the overall structure and heuristics point to a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ketchas.ru/uplcv?utm_term=digimon+hackers+memory+personality PDF link annotation
    • http://sieuthihatgiong.vn/webroot/img/files/30247482301.pdfIn PDF document text
    • http://akademibt.com/resimler/files/80226952767.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/e4c9bd9dfcfd62ea9c2eea80e0c9f714/47135067195.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/mixixuxojagiwalevivap.pdfIn PDF document text
    • http://stihoplet.by/upload/editor/files/vupodabopamota.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/97442250906.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614412ea634fb---70939879313.pdfIn PDF document text
    • http://a-pro-peau.fr/userfiles/file/85978413951.pdfIn PDF document text
    • https://vipbeachhouse.com/uploads/editor/file/ninevivoneramoxota.pdfIn PDF document text
    • https://0800-707-808.com/upload/ckfinder_temp/files/20210923175803.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16155f88831652---10788243626.pdfIn PDF document text
    • https://vidaleve.net/ckfinder/userfiles/files/36961759417.pdfIn PDF document text
    • http://xn--80aafkatcapceshpicpg3h.xn--p1ai/pict/file/kepijudiwexesuxef.pdfIn PDF document text
    • https://daks-96.com/f/uploads/files/20772088626.pdfIn PDF document text
    • https://kuepancong.com/contents/files/88542173534.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/xosemitinolapudipexusukit.pdfIn PDF document text
    • https://xn--dokumaanahtarlk-llc.net/userfiles/file/91441052921.pdfIn PDF document text
    • http://thaimassageboy.com/ckfinder/userfiles/files/56999495057.pdfIn PDF document text
    • http://ensky-chemical.com/upload/files/fural.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/4prf0dt3p1meuku974lm4nhquf/jegamugepagawakorukidol.pdfIn PDF document text
    • http://conflictfreeelectronics.com/ourprojects/chowki/UserFiles/renuka/file/pameligolijabijexuwebit.pdfIn PDF document text
    • https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/somuzesizipewe.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16130144f639d2---21635558623.pdfIn PDF document text
    • http://schokofontaene.de/idata/gobeporamezu.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_off0000b493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB493 17600 bytes
SHA-256: bff9eae89d39289e9d6f39c71b52bc6a326a334b866fbc903fb8791744d7aa8d
font_01_sfnt_off0000e18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f9a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A6 11028 bytes
SHA-256: 019a5cefee3bd9e1c3bb3eaa7d22ed1b01b38975a3c9240b0dd52196352acf59

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