Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec47d375ee28a344…

MALICIOUS

PDF

85.6 KB Created: 2021-09-13 19:25:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 32d7601ef6a6b634c6698adbc5d48a96 SHA-1: 37970c07b19315f1405f58e0b6b28aee0af12f86 SHA-256: ec47d375ee28a344a8f57b5e19d834ba9e74cb6de0c6f6d5a36de01ba87a520b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exhibits characteristics of an advance-fee scam, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. It contains numerous links to external PDF files hosted on various domains, suggesting a link farm designed to distribute malicious content or phish for information. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing or social engineering attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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
  • 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 http://agenziaimmobiliarecannavo.eu/userfiles/files/roduxizilolatadibe.pdf
    • http://3e3i.com/UserFiles/file///64315928394.pdf
    • http://medi-sen.com/files/files/32732567947.pdf
    • http://vallovin.it/userfiles/files/gonizuwodatenugolo.pdf
    • http://colorsoftexas.com/ckfinder/userfiles/uploads/36769982698.pdf
    • https://jdrum-music.com/uploads/ckfiles/files/vomulosegisoguvovegofeb.pdf
    • http://fatfailogistics.com/fckeditor/files/file/lomogubakudesuk.pdf
    • http://etalentlink.com/uploadfile/file///2021090410175450.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1613f03933d2fc---80102636479.pdf
    • https://osakadentalcare.com/contents/files/podolesapokuwuxike.pdf
    • https://travelone.ae/userfiles/files/kagonixikatufanagixud.pdf
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/3ecd35d88c685d06aa50c3f11f253a7c/fifiroxobebajaxa.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/e6481cc622e236cd5b730fc10747f3a6/50733772987.pdf
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134db8be2f4b---nanuzimifuribewekovamo.pdf
    • http://food-cloud.com/home/food-cloud/www/site/site/data/files/begikizubonevivasix.pdf
    • http://daming-school.com/userfiles/file/11551550602.pdf
    • http://sumbulefendiegitimvakfi.com/resimler/files/seguwuliba.pdf
    • https://enilubricant.hoakhanh.vn/uploads/image/files/zudovefarive.pdf
    • http://foto-klub.dk/userfiles/file/temitipurutibegugoto.pdf
    • https://www.acta-mobilier.fr/ckfinder/userfiles/files/19950184658.pdf
    • http://idealhca.com/admin/images/file/21540725307.pdf
    • http://www.jindatunnel.com/up_files/file/besuratojelixibaloduboju.pdf
    • http://azseal.net/uploads/userfiles/file/92503940291.pdf
    • https://ojazzdance.fr/userfiles/file/6543988839.pdf
    • https://harmony.im/userfiles/file/pudidonejizinuzotasasesub.pdf
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/lajebozo.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=escape+games+for+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_off0000e991.bin
c1c5d0a0eb11b8f0af41719938b2193dfaa2568a1c9ce915b2ce16cd0b4b4a21
pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 17620 bytes
font_01_sfnt_off000117ad.bin
4a2f23e09b360c29cf4460b6748ed926ee9bb76d594b5fb0e41acf9c52c2a3bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x117AD 10904 bytes
font_02_sfnt_off0001307a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1307A 16792 bytes