Malicious PDF — malware analysis report

Static analysis result for SHA-256 b020f621e6448189…

MALICIOUS

PDF

84.7 KB Created: 2021-06-28 01:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 55dc50da3191da1067385ac2cfaa84d8 SHA-1: 66d1f7047499dd5e898bcb34a31a4e6272b3ff08 SHA-256: b020f621e64481896b6ef463abb018ac31b24e61f26f6f89f75728f7c3f0eebd
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of a 'maleficent 2 full movie download free' search term in one URL suggests a lure for pirated content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/uu13apcvk5idlseq97d26dokc0/10687582790.pdf
    • https://die-elke.de/cms/elke_page_files/file/10607901577.pdf
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/9b7d8b834063f6099bc9483eb7821005/jezivugezugoturufowabare.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e75f398dd0---lunikuwesumenasunufo.pdf
    • https://wecareprogram.org/images/file/lodigufilobowiximi.pdf
    • https://psfund.org/public/uploads/files/cms_files/27647655459.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/q8fu3ip47te2al6f9vr7e4il21/rivulelila.pdf
    • http://hasyo.net/files/file/19268552293.pdf
    • http://interiorconsignments.com/media/file/98180339462.pdf
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/3411382258209fc1bc3a37c4691a5314/fatape.pdf
    • http://lorichphoto.com/pictures/file/76561459896.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607dd772a8ebf---75001138616.pdf
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/30884fa24241f60657a1cc341ae954c8/nixojumezutunofom.pdf
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160765f6ab8b79---34824117123.pdf
    • http://ehoron21.mn/uploads/files/finuremevalelan.pdf
    • https://gyn-koe70.de/obrazky/file/60081469341.pdf
    • https://ajitcoatings.com/uploads/manamujubopodipusonog.pdf
    • https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/def3caba8e22aec33a0f705de6c35509/56826523321.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160abc5c59034f---vixepudixujiputanijanape.pdf
    • https://aimara-bg.com/userfiles/file/43773058798.pdf
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/5f12159564aeb6be5bdf005eff36dc29/60436273084.pdf
    • https://www.mnspineandsport.com/wp-content/plugins/super-forms/uploads/php/files/8b7caaaa573f2f99c974cd7919b22512/mozojujowa.pdf
    • http://kwong-cheong.com/userfiles/21927682731.pdf
    • https://ildiko-szepsegszalon.hu/userfiles/file/tofove.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=maleficent+2+full+movie+download+free
    • 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_off0000e874.bin
4fb5a2a51ffc1174aea6daea42139757606b1ba1a6ad3c352e8e9ff68eabc0be
pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 16772 bytes
font_01_sfnt_off0001143c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1143C 16792 bytes
font_02_sfnt_off00012c53.bin
ced5ab4f444c25402c8ca4a805739111461fe23344e6664c612b2a884ee4b5fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x12C53 10832 bytes