Malicious PDF — malware analysis report

Static analysis result for SHA-256 e980366e7ecf8794…

MALICIOUS

PDF

93.8 KB Created: 2021-07-04 07:16:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-17
MD5: 68b572809398c389849538fd391f8fe6 SHA-1: 2e4509485b949ac84196323b4988dfae7d65e8a0 SHA-256: e980366e7ecf87944ef0b63ce31da3e36b5de390649def5606bf9fa1cc047244
156 Risk Score

Malware Insights

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

The PDF document contains a large number of links pointing to various websites, many of which are hosted on compromised CMS platforms or disposable domains. This structure is characteristic of a link farm used to distribute phishing content or malware. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 http://dakmoto.cz/obrazky/file/51258290939.pdf In PDF document text
    • http://alliance-ltd.com/userfiles/tojodopedipifefu.pdfIn PDF document text
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/1i66dbkc8u4bls7q2c0gme6772/jurovuvevapeg.pdfIn PDF document text
    • https://boumqueur-edition.com/upload/fckeditor/file/takosekegelefuvawanures.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609837e2c9e95---95089689410.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/oe08ro54tcum9vb1642fia0oh9/novapomarigakugirarobi.pdfIn PDF document text
    • https://eminencesolutions.in/resources/userfiles/file/vofovodofusegemoj.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/33rfk53c7fc73qev4dsff0rtgt/kenujopifixuguluxa.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/c7ab1c0083ee088cf4a74631c8e8ed95/sidikikepiz.pdfIn PDF document text
    • http://cfh2.com/clients/d/d2/d2a7b52150a7a947468b52e9b7560e3c/File/61069795917.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdfdaa5a489---87790679676.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/16085d22888fa2---76656134909.pdfIn PDF document text
    • https://mbzl-pro.xyz/web/img/podborky/files/zisipuziv.pdfIn PDF document text
    • http://studiogaleazzo.eu/userfiles/files/xavubix.pdfIn PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160959e3d87fcb---besujozagoxewa.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb4f2014e6f---67122201989.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2800cb2f2---rekaniduzudunekaxubabepev.pdfIn PDF document text
    • https://schmitz.cz/res/file/51600849915.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/75254687709.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/e0011e5cf3469f3ce93bee27e6041767/22822097559.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160803d26874d6---xekuzuxegodi.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b28702706dd---88181500789.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/pesufikuxulo.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/pedotuwoxumulizimimavisu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=steve+jobs+inventionsPDF 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_off00010c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C23 10204 bytes
SHA-256: cbfb3f9efeccfc3906bba9d53ad2536bdcaa4d817ee37d4b87a7b1ef236a28a0
font_01_sfnt_off00012321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12321 17184 bytes
SHA-256: 6f3cf1f3b5bcff224072c92e442ed2a4f6e1fdee5114037919c335c2ad272edd
font_02_sfnt_off00015041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15041 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.