Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e46e20fd7107047…

MALICIOUS

PDF

73.3 KB Created: 2021-07-07 04:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: a9cfbe876891ece16ed46d40d6896371 SHA-1: 2d64df8d84e7a3095282af8056e4570998569284 SHA-256: 3e46e20fd71070478190f25dd77ec157be6fe62460bbcd4f2f8e3af8c2e10456
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a phishing or malware distribution scheme. The presence of multiple PDF link farm heuristics indicates an attempt to distribute files via these compromised hosts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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
  • 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://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1609a29626e42b---26311063998.pdf In PDF document text
    • https://mytopics.it/uploads/file/nilatowogiwifixeguxivuka.pdfIn PDF document text
    • https://beautifullifeuk.com/wp-content/plugins/super-forms/uploads/php/files/3f6e6059c08510c7a4d68b8f780c5e52/12410528246.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/soziwoxutiwegi.pdfIn PDF document text
    • http://www.moyekolodin.com/files/69390856003.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/qqbroro26kajjv7efaubs2ifr5/56301454809.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/tkv4s6b5ogk699p5ki8l2076qo/kiwofudinufewujoluxuvixal.pdfIn PDF document text
    • https://sanidom.pl/img/file/vexefawizepi.pdfIn PDF document text
    • https://alibabaoman.com/basefile/alibabaomancom/files/44657230081.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/zezidofifinewoduvizeg.pdfIn PDF document text
    • http://www.toptehnik.si/images/luraxulolesov.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609deb7bbe0d5---vileluxeragabedefakamul.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/ee7973795dc9af739edba3ed5b1d1e22/gitemofazuzudomafamobez.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/79218096201.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/1jd8vcadlenpv0kuuegkgbcct3/tobuzisajakipik.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/eftu9lp2iilsa8lubmq78j5fh4/97483610350.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086c489b09d6---84232117959.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/93616530251.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887a1258cc5---24709806458.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774def62a2e---mepolobifovojata.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/5f4d1a9d85d776675626b2ea0b9f23bb/69614305971.pdfIn PDF document text
    • http://adamshs-pdx.com/clients/d/d3/d3c120c733f7363e2cdaef2cff5f3687/File/49471952596.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/cjhdg5933771oe5tvlor2fctl0/67663529847.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a64362d81f7---bagaridakusulutugepoled.pdfIn PDF document text
    • https://producedepot.us/userfiles/files/33234090868.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=s+launcher+pro+for+galaxy+apk+downloadPDF link annotation
    • 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_off0000bd53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD53 15632 bytes
SHA-256: a39d00dd06477dfaa3a2b9c57890bbc65f8bf37d18c41e6d34e63bf2d372a484
font_01_sfnt_off0000e5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE7 11112 bytes
SHA-256: 57fb2023bb25c7935629bf875925e264dbf9e9540923ab2141f0e630c5322fe1