Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfcc5e5dc6657222…

MALICIOUS

PDF

282.5 KB Created: 2021-06-26 05:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ee96f5111851d006c70adf520ffd4ee5 SHA-1: e4ee8738851dde095d75683166114b16094d9a92 SHA-256: cfcc5e5dc66572229fdb2a36736640863125cb7c6519f94e0ebb608560b01270
166 Risk Score

Malware Insights

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

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains lures typical of advance-fee scams, referencing lotteries, prizes, and parcel delivery requirements. Several embedded URLs point to compromised WordPress sites, suggesting a distribution mechanism for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9644

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.
  • 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://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/qsv12a50d59m3mbj8dm08o2614/83849228666.pdf
    • http://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/d9e75dfd0e7c95fcb5aa5d7a0fbcaf8c/bodoronavotobixujefenaro.pdf
    • http://capital96.com/userfiles/file/35845157344.pdf
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092f2b8a9560---16324967811.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607325451deeb---fonujuxopogiropuroluw.pdf
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c513d9626---zufitukodonizuxuwogub.pdf
    • https://leosservices.com/userfiles/file/91234551663.pdf
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7ad8b4d24---zafumuzife.pdf
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/5c1f9dc4175176dba38b1ca114d52f5b/zofepalafekizitub.pdf
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/g7ng9dempdrek6q4nhl7ovb44d/68323264129.pdf
    • http://asbazainville.org/userfiles/file/pijidilulabos.pdf
    • http://fotocaroli.it/userfiles/files/paxomalobu.pdf
    • http://e-pisanie-prac.pl/famprojekt_z_serwera/images/file/gerom.pdf
    • https://psg66.ru/admin/ckfinder/userfiles/files/17460412152.pdf
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0834c594b---toxofuzukuvirupofo.pdf
    • http://allasclub.com/campannas/file/saposubogotojisijarazu.pdf
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16072f7c0a10e7---tobaz.pdf
    • https://burgas-remonti.com/userfiles/file/xuwosubagafisuvujarej.pdf
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607aae5a0d562---bulokipapajawudumireko.pdf
    • http://broadmoor80.com/clients/866172/File/28733627098.pdf
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ede25ed841---2284118072.pdf
    • https://alexandrapanayotou.com/web/images/static/file/lixewopovesebanowu.pdf
    • http://teraval.cz/res/file/55284747920.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082ad21f2f88---lawunilelupane.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=introduction+to+algorithms+solutions+3rd+edition+pdf+free+download
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003daf8.bin
f2de77353303bc1722a6a932f0ad4be68e7ed4e873e066bd3797f63861a7d328
pdf-font-stream PDF embedded font (sfnt) at offset 0x3DAF8 11376 bytes
font_01_sfnt_off0003f576.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x3F576 16792 bytes
font_02_sfnt_off00040d87.bin
f93e74e2ecd209336e592c7c4893eeac8f067ba9c1e39a354c133e38cb376a15
pdf-font-stream PDF embedded font (sfnt) at offset 0x40D87 16116 bytes
font_03_sfnt_off000422d5.bin
740886099a27322a1131d7daba5e3f4e6c0ab377fcdb0d6e011bc9c606c1df2a
pdf-font-stream PDF embedded font (sfnt) at offset 0x422D5 22872 bytes