Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddc007ee1c5d05fc…

MALICIOUS

PDF

134.0 KB Created: 2021-06-30 04:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 84a27e6cfdf642b3bfe1840ac75056fc SHA-1: c14831a52a3e21051aa4a1aa74067054e0d0e75a SHA-256: ddc007ee1c5d05fca79f1f20ba6d5475076e7b291fa41067a0b1e8712ce75417
156 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

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://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b743f65a12---20639251908.pdf In PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/2nts789ndfvj9cqomfe4cujd78/gafalusesi.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075519f81507---vawomikilamubejozozigukeg.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/lemonuzifosowevoje.pdfIn PDF document text
    • http://wagnerpc.com/userfiles/files/lakavavilo.pdfIn PDF document text
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3eebea3f5---pamirekolekegiwinepotuju.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/49786d5333ee91313ee800e0850c3016/21535593395.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160825f313b02c---94235769702.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/fqovsgea179rr43uv1qqomfga4/tezonip.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7314cd812---jofinanevavemuk.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1608d23f384cc4---puwakozipel.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2d766480f---56627993397.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7010bad792---jegepapunigatupuwutaperew.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/14e108447123ad623a4d00dce32062ff/jenefemodoneziwupumapoga.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c59d128e93c---72177707372.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/tga1jao7u0qav6rhn90e0rp6pt/53713281198.pdfIn PDF document text
    • https://serwisnawigacji.pl/userfiles/file/55261451464.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/49004106536.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/3c818dc9ddb5a9d11a132c787a149f26/61929584225.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/b240bb56890d5d882045efabdf80337c/14120464888.pdfIn PDF document text
    • https://micsys.in/userfiles/file/80301681087.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=stayconnect+app+screen+mirroringPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19094 16396 bytes
SHA-256: 7ca50face42b81415bfef5f2263a25a1bf22ace044cd1930a40731e8e12860f3
font_01_sfnt_off0001a71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A71D 10860 bytes
SHA-256: 2e26b3e5622e8d9c9cd3339b6fc5e9c0d12cc22fa4485114b9cd473f69d826d5
font_02_sfnt_off0001c03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C03F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001d851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D851 18780 bytes
SHA-256: ad45a2ba2efeab92258a29790443eacd25eca301ab6424837a058eb7922bed1c

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