Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabfb432dd00e3b2…

MALICIOUS

PDF

85.3 KB Created: 2021-09-01 12:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 00113a03678de45f1dc9ee7246393ad5 SHA-1: ec00f2f8fba4c512313ac23de4885bcb2cd73980 SHA-256: fabfb432dd00e3b2f37da7aed2fa9375ae49a1add0e4e16d4650dd36abbc3680
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs pointing to compromised websites, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure indicate a likely phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://garglob.ru/uplcv?utm_term=funnel+cake+made+with+pancake+mix PDF link annotation
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/e2940691343c9fc1eb2f33af528eb461/21383639194.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611e0eb68f683---lakovokadomimilod.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16076463d6957a---95268506930.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/2f5aca662165cde2fc4c04261433f66d/60009511789.pdfIn PDF document text
    • http://fvv-hohenfelde.de/sites/default/files/files/supaxaxaved.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/sasuranowomujanosegefetez.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c985c9c6db6---52194933504.pdfIn PDF document text
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b03451b6b---27035509099.pdfIn PDF document text
    • http://kabaretyimpresariat.pl/Upload/file/55507020957.pdfIn PDF document text
    • https://equalland.com/uploads/File/74094203483.pdfIn PDF document text
    • https://clifestyle.net/uploades/userfiles/file/difirisasenebukewalulow.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16085996319359---51301935475.pdfIn PDF document text
    • https://all-stage-meditation.tw/uploads/files/60f662673138a.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/11218978a54c7dfb8dd471b33f542153/tubonezapes.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1607843a20d984---resumovokekinifumat.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/tidotanik.pdfIn PDF document text
    • https://inlandautorepairmurrietaca.com/wp-content/plugins/super-forms/uploads/php/files/08983f4bf4606f2592f1dc924d0551a2/kagamoze.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/26434689596.pdfIn PDF document text
    • http://mywayrtk.info/userfiles/file/lanajibitokavosavawariwa.pdfIn PDF document text
    • http://currycornersugarland.com/admin/images/file/domosotoligir.pdfIn PDF document text
    • http://bacsionline.net/userfiles/file/xenataveku.pdfIn PDF document text
    • https://kfmaccounting.com/webroot/img/content/files/41770616911.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a283c53b2a---86450901484.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_off0000e8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C7 17632 bytes
SHA-256: a20983668ddaca37e051d208a9689083da4616af8d40f1e4d4c02015e7b0307f
font_01_sfnt_off0001162a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1162A 10748 bytes
SHA-256: 3ad38084296761fce5dc27b0312cac1a5696e42e8624405a6a32cdac4863afb5
font_02_sfnt_off00012eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EB6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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