Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed7b0870c415a8f…

MALICIOUS

PDF

95.4 KB Created: 2021-06-29 18:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5cefac64817dd5fced5b9923a250f8c8 SHA-1: 842b2755e4e491e318cf4240f22995e5c3b9823f SHA-256: 8ed7b0870c415a8f64662e8e843a1085aac9fd76a8e7336f9d6daa8fae1fc903
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The sample was flagged by multiple heuristics as a PDF containing an advance-fee scam lure, indicating it's designed to defraud users. The presence of numerous links to potentially compromised websites and PDF files further supports this, suggesting a phishing or social engineering attempt. No scripts were extracted, but the overall structure and heuristic firings strongly suggest a malicious intent typical of advance-fee fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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
  • 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.
  • 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://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/fauei14bshne9p452va4alkbo1/didipanatebajuzizopagaxav.pdf
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/5cf34aadf92132ae07c5ed3a7aa5769f/lezon.pdf
    • https://vsetinrally.cz/userfiles/file/26069704067.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/c4065e024b08289ac46d46fb524afbd1/bufapafipotadetozapig.pdf
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/j3p00lm79jajlbu5jibdjeah24/tegazozo.pdf
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608827fb3e435---jidoxasiluxelaku.pdf
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a0edcd92601---73724358125.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a871e5c70d7---17054746582.pdf
    • http://capitalclassof1971.com/clients/4/4c/4c1e4f015ba9b8bec237dc1ca705466d/File/17798911660.pdf
    • https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/3a4d943be872ac0a23481b999f1ea776/80171716342.pdf
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606c815eeb93e---17469097232.pdf
    • http://teormech.ru/teormech/usrimg/file/60748113258.pdf
    • https://egca.fr/userfiles/file/70440355355.pdf
    • https://1877painters.com/FCKeditor/file/21568951830.pdf
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160daa5c6f046b---16872800149.pdf
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/b0fbf53e4f475167ec8444631519bcd8/44943227680.pdf
    • http://sibinetweek.ru/userfiles/file/gikagu.pdf
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/8c64a273193eadc7820d74763ce96ca4/lakadedamikaxivokiz.pdf
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160868d45cf884---70337939492.pdf
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f4fe787e8---505669564.pdf
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/vshtf6f96attlh96drdgal3imv/fotomerorirexubapes.pdf
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cf0dd23f9c3---sojixizefa.pdf
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/116808f2e7d0891f1aa2c8d0235cb5f0/36351481830.pdf
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/cnscah5208ig1fvvqvb6qpr8f4/ruluminirusitiv.pdf
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0b84723c8---17329482158.pdf
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/gjlkg8iapo37t5qud80r5vvgbp/mejozite.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+create+an+editable+pdf+form+in+photoshop
    • 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_off00011081.bin
05ea29f48f19aebe1be29dade8b49e9caec6bcedc83dc70dcabd29a9c48a3157		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11081 11104 bytes
font_01_sfnt_off000129f2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129F2 16792 bytes
font_02_sfnt_off00014204.bin
c68c48ca75248502221a43970ae0b6d4d0811f57e5e934e5936ef7e2bd90731a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14204 17496 bytes

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