Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3fc6b2132e0584…

MALICIOUS

PDF

85.0 KB Created: 2021-09-20 13:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 76b0c8fb75b7adac8a76fe40fa5a8eb1 SHA-1: f0ef7dce24bfea3edcf55c0c2ad2cab54f7246fe SHA-256: 0f3fc6b2132e0584422176d1733d42d59736b645fe1c0668980e179abe191137
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document identified as malicious by ML classifiers and ClamAV. Heuristics indicate it functions as an advance-fee scam, using lures related to lotteries, prizes, and parcel delivery. The document body is heavily obfuscated, but the presence of numerous embedded URLs, many pointing to PDF files on various domains, suggests a phishing or scamming operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://simon-daulte.com/ckfinder/userfiles/files/tigumeforafutoduwesezubig.pdf
    • http://breakevenpoint.pl/uploads/editor/file/pozelikofi.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c6c97405b6---sejuxa.pdf
    • http://ternovykh.ru/content/file/94854220506.pdf
    • http://epwuae.com/userfiles/file/lusupiv.pdf
    • http://xn--o79av69abka850ab6c.com/upload/file/202109080803542866.pdf
    • http://abwcockeysville.com/uploads/files/fulirigiparotudureduwerej.pdf
    • http://ecole-belair.com/ecole/file/kovadafuwozuxajidebigojul.pdf
    • http://tchid.net/userfiles/file/kolerarukemoluj.pdf
    • http://xinxinhouseware.com/uploadfile/files/wetotasineli.pdf
    • https://kakakmanis.com/contents/files/famametagarorofelek.pdf
    • https://reklama71.ru/upload_picture/tumuka.pdf
    • http://xn--80aap0abfiql8h.xn--p1ai/admin/ckfinder/userfiles/files/73443661508.pdf
    • http://pickup-ws.com/userfiles/files/33232440585.pdf
    • http://asja-doll.ru/userfiles/file/9082515815.pdf
    • http://poslovniimenik.net/firme_data/files/79409606000.pdf
    • http://daydeothe.vn/rich_editor/file/gelovarisagaxelaj.pdf
    • http://theemasternetworker.com/ckfinder/userfiles/files/13482942451.pdf
    • http://jgweld18.com/UploadFile/file/20210909202328843.pdf
    • http://immobilieninvestors.eu/userfiles/file/kugupabi.pdf
    • http://radissonhoteltraining.com/userfiles/file/zudifezunopib.pdf
    • http://studioschicchi.eu/userfiles/files/xisigegarevoposupogirala.pdf
    • http://classicalgardenstatues.com/uplds/file/dutosejoregige.pdf
    • http://vertracapital.com/uploads/files/49370435708.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+recover+erased+data+from+android+phone
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e68f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE68F 16792 bytes
font_01_sfnt_off0000fea6.bin
53bac55cd5279320e0f21f640e6ede1dd1412d237091d6e570d3562c4cbc971d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA6 10980 bytes
font_02_sfnt_off000117f5.bin
45bf2112fb9ecb6188fcd03daf3031b71dc22897cc452478243788aae5fe8262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117F5 17832 bytes

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