Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe032bace7a5d887…

MALICIOUS

PDF

86.2 KB Created: 2021-09-17 04:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 897ed3c04461f8f576cb069f687c0df0 SHA-1: e0117b5760a05d9f9fead8290750bc205decf402 SHA-256: fe032bace7a5d887be6e423c90e4130fc944b9d8427e78db483c2049345167ff
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs that likely lead to further malicious content or phishing pages. The PDF structure and the presence of embedded links suggest an attempt to lure users to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.maderas-navarro.com/ckfinder/userfiles/files/fekodid.pdf In PDF document text
    • http://daindnc.com/fckeditor/userfiles/file/53941271549.pdfIn PDF document text
    • https://goldmenu.com/userfiles/file/togofulogapomotanimasowi.pdfIn PDF document text
    • http://kientrucphatloc.com/upload/files/fuburuwadalegofilinoxup.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/43bb5e84dcdb8cba5739d857600c61b7/26977243645.pdfIn PDF document text
    • http://gaushalango.com/uploaded_files/userfiles/files/64960664528.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/xizifajarumu.pdfIn PDF document text
    • http://vasekurzy.cz/userfiles/file/40631678736.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/97022505564.pdfIn PDF document text
    • https://kltccompany.com/ckfinder/userfiles/files/poxesotaliwajujovufevowax.pdfIn PDF document text
    • http://c-amc.com/upload/files/mimosenumonoxarudewofepad.pdfIn PDF document text
    • http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/43763101002.pdfIn PDF document text
    • http://uniquecharacters.com/upload/files/levumijopat.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/wojuroradesovedonufov.pdfIn PDF document text
    • http://1-champagne.com/blog_images/blog_/file/fukudovaga.pdfIn PDF document text
    • http://arniestribu.com/campannas/file/rojatuzesusamapizofo.pdfIn PDF document text
    • http://chayka-svg.ru/files/sabejikixagezewepupatovud.pdfIn PDF document text
    • http://hbisan.com/userfiles/file/30033295511.pdfIn PDF document text
    • http://biancoacolori.it/userfiles/files/dajidadaseve.pdfIn PDF document text
    • http://allefrgycg.news-read.com/upload/files/66521005114.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/lomevewinoximafenixeta.pdfIn PDF document text
    • https://simbhaolipower.com/images/file/3611444789.pdfIn PDF document text
    • http://qcfloor.com/userfiles/file/zaroz.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16143ea00c6e7b---gimutukipazosumase.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=jw+library+apk+2020PDF 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_off0000ed32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED32 18072 bytes
SHA-256: d4a1dbd44e1252216c585814833d203575380f3f9508adb2cb6717a7bc15a066
font_01_sfnt_off00011bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCA 10288 bytes
SHA-256: 6f09def3481b510f9cfeb2bb949d4c15da8d76daf764494315e644d85942dbfe
font_02_sfnt_off000132eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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