Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde0eb165d3250e5…

MALICIOUS

PDF

88.0 KB Created: 2021-06-29 04:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d33a077ab6dd7e21c7e7ae6eb88af592 SHA-1: 555eba2d7fe3e3895e68da4501101ca14624a2ed SHA-256: dde0eb165d3250e5465076ff3575084fb2cf4d6567ab98d22d8bd24d3935d6cf
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of an advance-fee scam. It contains numerous links to external websites, many of which are hosted on compromised WordPress installations, suggesting an attempt to redirect users to malicious content or phishing pages. The document's structure and content align with common advance-fee fraud schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b254deaeca9---96344109571.pdf
    • http://tv-sat.cz/userfiles/file/nekulivefarodepuv.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee4867ab42---43116456192.pdf
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077d4265de1b---tizoxunajixis.pdf
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b10c6d5bdc3---zepuwod.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160c333589136b---fufatevazuxukelamutitimom.pdf
    • http://arniestribu.com/campannas/file/87359925971.pdf
    • http://emilygrilltogo.com/uploads/files/marunamilirexebozewuweb.pdf
    • https://capecoralliving.com/media/file/23158463991.pdf
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce6ad17f7e---vajafoxejupabaduvu.pdf
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/mvldlj3gtc4jv402gkar65amra/71749537824.pdf
    • http://brette-animation.com/userfiles/file/68713297913.pdf
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a145cd19c1a---dodenanidotiwis.pdf
    • http://z500.si/files/vevavuvefifejulila.pdf
    • https://99shayari.in/userfiles/files/77089190338.pdf
    • https://melz-feu.ru/upload/21300196134.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b29df44f561---vawegofosor.pdf
    • http://thedreams.cz/files/51354751992.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609f547cdd052---52954858545.pdf
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073a952e2a63---mavetebenuxisidapexozimu.pdf
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/bb588c40519e0bdb014d89c71d08d8af/87959583894.pdf
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f288d0e222---dajewobufebe.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=sbi+fixed+deposit+account+opening+form+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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d6.bin
af68f2ff8ec2e542ee709395bf03e14568563ed212c70ff2c670c1136faa75e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D6 17548 bytes
font_01_sfnt_off00012010.bin
3edb85126591b95e3b3ad63466d90993f116ff9512e0aae7adc2558d9ea30a90
pdf-font-stream PDF embedded font (sfnt) at offset 0x12010 11336 bytes
font_02_sfnt_off00013a5d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x13A5D 16792 bytes