Malicious PDF — malware analysis report

Static analysis result for SHA-256 0310490d3d64d3b3…

MALICIOUS

PDF

87.0 KB Created: 2021-08-18 17:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 97e1202620cb0c5de19c044e9488c529 SHA-1: 1168f0b91c31eec36f0fd0e2d2979eb85293d78b SHA-256: 0310490d3d64d3b3c3912de2dffe71e754099b5dcc26714a8471636db2b25b27
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. The document contains a link farm with numerous URLs pointing to potentially compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of embedded URLs and the nature of the link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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 https://nomylo.ru/uplcv?utm_term=surah+noor+tarjuma+tafseer+pdf PDF link annotation
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efad0729d8---minujemisu.pdfIn PDF document text
    • http://dgjst.com/upfile/file/xogewulutusegasemaxit.pdfIn PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/7ia69q6esebv8vo5eptvqpjodd/labebavagobikapa.pdfIn PDF document text
    • https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/fv6vbtr01t9abqpi41qv0tvm5p/litezozutuda.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087abb4e51e8---xudulifoloperugoxetixetut.pdfIn PDF document text
    • https://napraforgohotel.hu/upload/file/kamabegilarazuwol.pdfIn PDF document text
    • https://medbillings.us/lightspeedweb1/file/5039835288.pdfIn PDF document text
    • http://versobrokers.eu/userfiles/files/64967662902.pdfIn PDF document text
    • http://franklcalabreseattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/49170743021.pdfIn PDF document text
    • http://mygiftltd.com/userfiles/file/82296695216.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085d80f5d804---60391645572.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/35696104030.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/kutabupopupixujuzaxena.pdfIn PDF document text
    • https://woodfur.in/userfiles/file/wojuxebugumobesi.pdfIn PDF document text
    • http://ligonfamilyreunion.org/clients/9/9a/9a44987365eba454cd9b2deda39aa7c0/File/47456202548.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/4001b0b8ba11da47dc81d09d52404cb4/babibufebadu.pdfIn PDF document text
    • http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608679169ee0f---17375165315.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/33029613079.pdfIn PDF document text
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe6fc3c5a5---fifalobasu.pdfIn PDF document text
    • http://kidsjeodo.com/images/files/41233514395.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/08daf63f5e2f5de8d3dc742f5672afec/kugijasoxegutetagagan.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/ba4df1e34aece949a24f704ae96b7a69/12451415291.pdfIn PDF document text
    • http://vizugy.hu/uploads/files/files/35761439107.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD818 16724 bytes
SHA-256: e6c2681e47698d19d6fa03831d6a8d5941f23f1b9453dcff0c95b9b76ba368b8
font_01_sfnt_off0000f001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF001 17288 bytes
SHA-256: fed1532012d9e7851070dd96cf3780360a39908cf0feae46c066e8344ff99674
font_02_sfnt_off00011d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00013522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13522 10928 bytes
SHA-256: 6eda5f72d1fc5b4cb905ff7cb6d3d9a773b8f1e102e870968863bebecba1eaa0

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