Malicious PDF — malware analysis report

Static analysis result for SHA-256 45d7767722d2a660…

MALICIOUS

PDF

80.6 KB Created: 2021-09-02 03:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 00e2ca86518c5dea56886f2dae37f03d SHA-1: 52cb55971c377ae4e6f5acb6a9b723bde31a0591 SHA-256: 45d7767722d2a660c2ecc61a9506b3d6f3332d8c3709d0824f6d06b6849ee09d
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classifiers also flagged it as malicious. The primary purpose appears to be directing users to potentially malicious or deceptive content hosted on external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 http://batiment-tunisie.com/userfiles/file/97498869187.pdf In PDF document text
    • http://homespakistan.net/magzine/uploadfiles/file/80437646928.pdfIn PDF document text
    • http://rencontres-icare.org/userfiles/file/79013659362.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d33ecb2b9c9---salitezogama.pdfIn PDF document text
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/wogewumadoxudusujami.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ad7232794---35952397104.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/somogoxakavewiluposeg.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c3560e5be4---65882868772.pdfIn PDF document text
    • http://bixenony.com/userfiles/files/luzigexovob.pdfIn PDF document text
    • http://myafmc.com/clients/a/a5/a51d49d85de18111a3d718c63a5e5081/File/61913538373.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/4qfmqeevmrek04u4qde9birm56/94909611021.pdfIn PDF document text
    • http://smcertificationservices.com/userfiles/files/63087658580.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1609830c5b9a57---ruporalaxalidute.pdfIn PDF document text
    • http://sanxuatbanthinghiem.org/app/webroot/uploads/files/72924779442.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/xatukakaforeteba.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/29280604423.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/kojedojunededari.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/ridisokate.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/sebokuxeporiviriwimo.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/57895898331.pdfIn PDF document text
    • http://cheapneasytrafficschool.com/CheapNEasyTrafficSchool/pa/trainstation/uploads/image/file/pufesimu.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b505851e92---41551722175.pdfIn PDF document text
    • http://debseven.net/UserFiles/File/59678389361.pdfIn PDF document text
    • http://psychoterapia-przemysl.net/img/userfiles/file/2418122106.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=ohio+job+and+family+services+unemployment+phone+numberPDF 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_off0000d564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD564 16812 bytes
SHA-256: 9a749bc5f1bf570a697602cf06b0492d868dcf0525064a63d67d0c02e4d23434
font_01_sfnt_off000100a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000118be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118BE 11460 bytes
SHA-256: 86f43f9c6ca098e7b2abdeafc8ab3c9ee2c04c5f26f36ce3a20f7289082b7e10

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