Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96101cc95d7d7bf…

MALICIOUS

PDF

86.5 KB Created: 2021-08-04 22:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c3ea3158ca7065c735e5022f74c21c8c SHA-1: c0622039464234c056579abe17ecdf79009e9597 SHA-256: d96101cc95d7d7bf4de0711fa281edbbf353af684af74bbfded7f3fbba324323
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded links, many of which point to compromised websites or disposable hosting. The heuristic 'PDF_REPEATED_PAYLOAD_LINK_LURE' indicates these links are designed to deliver a payload. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • Invisible/repeated PDF links deliver payload file critical PDF_REPEATED_PAYLOAD_LINK_LURE
    PDF uses invisible link annotations and points to a direct payload download. Repeated invisible links or lure-like payload names such as document/unlock/verify archives match malware-delivery PDF carriers where the page is only a prompt and the real payload is fetched from the linked URL.
  • 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.
  • 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://smidgel.ru/uplcv?utm_term=rise+of+kingdoms+apk+mod+11.6.3+for+android+apkdynamix.com In PDF document text
    • http://changju-hotel.com/CKEdit/upload/files/98956204161.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac171cc3bd5---94073358379.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087315dcf0ed---jigatekukebuv.pdfIn PDF document text
    • http://tuclubcr.com/campannas/file/33473491885.pdfIn PDF document text
    • https://abhimaninteriors.com/ckfinder/userfiles/files/63888900916.pdfIn PDF document text
    • https://warungmimpishio.com/contents//files/79308464188.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/9b8e000ddac3272f8c929b982541e944/faxadulol.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d5c9bfe77---dozonojag.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/47147385009.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/7c6e8092caab7fe906a97ee293f0eefa/tipoxozujonidoxibirifosa.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609edbffcaab2---45034951230.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b684fb64c7---17874338614.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/68319233209.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/jmgfhji7q8m1kg6pbisba1tfah/gewimavo.pdfIn PDF document text
    • http://federalwayhighschoolclassof1970.com/clients/8/8c/8ce2019516a67423f07d8eefa67dd611/File/3038831130.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/nopolizezopumi.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607d031fe62df---88278379877.pdfIn PDF document text
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/f058232e0b9a7ea3ab055f84e1de5078/kurazanifow.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aacae723a3c---lozozigazoferino.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4061b08ccf---davizemuf.pdfIn PDF document text
    • http://zzquansu.cn/d/files/vodotivomukixivatotexuf.pdfIn PDF document text
    • http://kino-cosmic.ru/sadm_files/99329595615.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/gilobanewipavuxizud.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745f0084572---narunomawiputexaxap.pdfIn PDF document text
    • 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_off0000ebf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF6 17080 bytes
SHA-256: 25f243a1a6cf0b2e22a531545850770592727e516354c1ce6cc1578b73f56f26
font_01_sfnt_off0001185b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185B 11628 bytes
SHA-256: fd317490f6c5007fe180e99cdc8615dd6b333b2563bb5ad91dd85dbaf62c644d
font_02_sfnt_off000133e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1