Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ebb8a3ff2a632f…

MALICIOUS

PDF

107.3 KB Created: 2021-08-01 19:21:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6b65dc3d1460b61a1b5a8b02ad6e67c8 SHA-1: c84d43ebbfe05a1fa811e2a99df061bd5c4fb964 SHA-256: 75ebb8a3ff2a632fb86d7cecd656de7a4dd49da4700ab896bfd56f619ac78e51
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was identified as malicious by ClamAV and an ML classifier, and exhibits characteristics of an advance-fee scam. It contains numerous links to external websites, many of which appear to be compromised or disposable hosting, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick users into believing they are receiving a prize or parcel, requiring them to take further action that likely leads to malware infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://inwebjor.ru/uplcv?utm_term=giant+defy+1+2015+frame+weight
    • http://nfc.soo.jp/file/78896180725.pdf
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/0c9889b400a9b4f46c26a1c21edcfd84/futelurugisadozabulinuxir.pdf
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/7d15ea4a6b1fadbf8dbd6f4f2cc50584/venamazizokoxises.pdf
    • http://www.urbanwaterways.info/files/luwugekisegi.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/15cf2d5890c767c4d1d21f25cd792e89/80123940940.pdf
    • http://ptaki.info/imgekoprojekty/files/31753617411.pdf
    • https://cuisinescartier.ca/upload/editor/file/21547472652.pdf
    • http://chickendaylacrescenta.com/uploads/files/34895055803.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160721e691cc10---fovujidot.pdf
    • http://apvn.info/userfiles/file/voluritopuzomefaguwutavo.pdf
    • http://gesundimjob.at/images/content/files/xuvowipagulux.pdf
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b00b1d898d1---17276728834.pdf
    • http://khanaphatgroup.com/UserFiles/file/taxurirofelinogowefafam.pdf
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5da61815d---70868543535.pdf
    • http://sushi-belovo.ru/files/sotakarusab.pdf
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/16abfs03g2gu8f959pefqrs6df/71352711497.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e7b4c58f6---65251826578.pdf
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/9c243cf3f7ee826fbda051ca85dae59a/roxejafetobarami.pdf
    • https://angkorphotographyguide.com/userfiles/file/dowununibulusux.pdf
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/69191fbec62e86275e07838ca389685f/puzajugimowax.pdf
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c8742270700---zamine.pdf
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/6d147129e84e8255ee1f315a61c7b952/79048430073.pdf
    • http://labonscafe.com/userfiles/28125812735.pdf
    • http://allycatering.com/userfiles/jiwesutamevapisep.pdf
    • http://qbcar.ru/ckfinder/userfiles/files/10702202241.pdf
    • 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_off00013496.bin
3e54697433f258519e59b5d4193970bd3702f67e639bb31f2dfcde737eb7fc9e
pdf-font-stream PDF embedded font (sfnt) at offset 0x13496 1728 bytes
font_01_sfnt_off00013cbf.bin
2057690be604368a7202b0c37d94fcc4dd058939b7332f59fd0e085f7f5fc61b
pdf-font-stream PDF embedded font (sfnt) at offset 0x13CBF 17452 bytes
font_02_sfnt_off00016a70.bin
a823a417aaf6ec85e53fd4fbfb24fa0d8b354c25be2ff3fe59ffb541f9efd9fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x16A70 11136 bytes
font_03_sfnt_off00018446.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x18446 16792 bytes