Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec601704ad475aa…

MALICIOUS

PDF

218.9 KB Created: 2021-08-15 04:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: c9e400c29f74a8a186dd8ac518a15dc2 SHA-1: 03bc077c7fa6dfba79b61e0324ce74b94c4f62c1 SHA-256: 9ec601704ad475aa3db67ea2566cbdb51885a565d751a2452a50eb00f398f3b1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URLs and heuristic findings indicate that the document is designed to redirect users to compromised WordPress sites, likely to host phishing pages or further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8603

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
  • 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.
  • 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://huntic.ru/uplcv?utm_term=revue+technique+tractopelle+mf+50a PDF link annotation
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b882bf01d9---setow.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160708c8c923ac---72046551793.pdfIn PDF document text
    • http://assytekservizi.com/userfiles/files/luvajopozipakekapo.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160bb20c2b269a---93945282649.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/9tbvpgtkl7o5or886mrql7224t/nuzemapogaxadev.pdfIn PDF document text
    • http://centronegozi.com/public/8970306518.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/3191af8784fb35572b42435fbf6e9047/livaxufoninorajiruxa.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0b35c74b9c---nazororelis.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/43450874306.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608778bd4b511---48949104722.pdfIn PDF document text
    • https://www.adilaltinsoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075131dd173c---pesawubufivedamog.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/51934210928.pdfIn PDF document text
    • https://rajaketiga.com/contents//files/jerul.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737b4708708---gevisomubimi.pdfIn PDF document text
    • https://csodamalom.hu/files/files/bifaritiborozixirijadizu.pdfIn PDF document text
    • https://thietkevuphong.com/uploads/image/files/42814169626.pdfIn PDF document text
    • http://elektrostroy.kz/ckfinder/userfiles/files/dilozazowegagigexo.pdfIn PDF document text
    • https://www.kasekimi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072d82ef235f---wejopinafuwomagukuvit.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/rorulamizax.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/0cb46601f7023024ab19a33620d88da4/96007406428.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607feeeec33f7---pororetawegapaxux.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16084f005bfd65---lovurudijilavomerapupox.pdfIn PDF document text
    • http://castel.lu/userfiles/files/dunumazapusenuwila.pdfIn PDF document text
    • https://dichocungtoi.com/userfiles/file/ditunakudobometowade.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/c3c6a360e0c2bb915afc87a8473ac3e8/gikos.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_off0002f729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F729 11188 bytes
SHA-256: eb2d90ec034f339b97300810b788e6aee32fe9eb2d9a5017e3736ef553c21268
font_01_sfnt_off0003112b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3112B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003293d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3293D 19872 bytes
SHA-256: 8a87d60de4b096ae9df87f8ddf89bb531482e5be85c9b88b69b2612662cf1053

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