Malicious PDF — malware analysis report

Static analysis result for SHA-256 badd070ed2fd8797…

MALICIOUS

PDF

86.8 KB Created: 2021-07-04 05:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0640557b4d0069896e8befca7bf49068 SHA-1: 5f6cb0f9cbdfaeab4d6b758bdaf0238264ed6185 SHA-256: badd070ed2fd8797392ecdeb66a9e88b47c33783ca279e109a21d94e1c783b5c
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution through these links. The presence of multiple distinct hosts and the use of disposable hosting further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9848

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://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16084af1bae166---ruzalazuxipiw.pdf
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/sv48ok2rd0p1b7tn15efijn802/vofajokudanarebun.pdf
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/0518837d6933ed54adf8567de4924937/gimarijasog.pdf
    • https://irantruck.ir/data/file/88798314047.pdf
    • http://pamatudarbai.lt/ckfinder/userfiles/files/11719520162.pdf
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad01c3531---rofup.pdf
    • http://allamericannursing.com/userfiles/file/litifumuniwefigup.pdf
    • http://anatolianlgs.com/userfiles/file/zuwojulofifa.pdf
    • https://brahmagnanam.org/fck_uploads/file/jireragipurujuvi.pdf
    • https://247christianity.org/fckeditor/userfiles/file/toxurivutigikusoxujusisul1622164168.pdf
    • http://rafaelokazakov.com/file/36432580503.pdf
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/636f0639090f754aabe74e64e31ecf0d/71476023371.pdf
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1609e91ea59579---10325674771.pdf
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607a58173a7da---42344142818.pdf
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/bb69d427f51921691c263bd7462331c2/mojiguso.pdf
    • https://aawyx.com/sites/default/imageuser/file/89569125446.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e366f57bf1---54724012598.pdf
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/958dda0719752118b5042bb3c48e3050/zupegepexexetife.pdf
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/37d760d964a01588ea8242d8a2db41d2/bosuvib.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/7jddtkrqoaqntn9o432h1am5qi/46177502785.pdf
    • http://uleiuri.ro/userfiles/file/4626348100.pdf
    • https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/3e456ab6ea0c577791825fee84a733f0/vamazimepuramiziko.pdf
    • http://strategie-online.net/catalogue_dynamique/file/14148579393.pdf
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e1d51ed0a8---xoletejirusunawuz.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765d032f898---niwinoveladujelabuf.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608e610cde26e---rotujefawivizesupetupon.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=pilate+and+jesus+bible
    • 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_off0000f12f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF12F 16792 bytes
font_01_sfnt_off00010941.bin
c7935fe1fae6ea7d3af3a5511673b7cc1cabb0992b06dfc4d15af6e450f4c6f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10941 17452 bytes
font_02_sfnt_off000136af.bin
31dcbac09e75a3ad8ae1465ba675584a2da110426cd00185861fdf5c7a1368cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136AF 10392 bytes

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