Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddee208653c1cbd…

MALICIOUS

PDF

75.3 KB Created: 2021-09-03 22:08:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6e25f6c95f903cec58b28457af180fd9 SHA-1: ed0f8aaf4db17cbce51930a5f3f397b0caa735f3 SHA-256: dddee208653c1cbdee43f5e0e3f18dc1ad42ef3c03d2994ad3807e2c009f1dd0
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 links pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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=ganesh+stotram+pdf+telugu PDF link annotation
    • http://riggi.ru/userfiles/file/32588504183.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085576e79819---lesokewolix.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/81820700914.pdfIn PDF document text
    • https://festival-bg.com/media/ckuploads/files/rowufoxu.pdfIn PDF document text
    • http://limeitec.com/upfiles/editor/files/rifulewakuridafefoz.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/7kj5njno2nqsp098s2nasgarjs/juniteboponuxevin.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c23af2708d6---razigokexivekex.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/kawusotibigesuximo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b137957f0d9---25193625793.pdfIn PDF document text
    • http://zjqzzx.com/uploadfile/file/2021073002164673499.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/batumikulotavenak.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/rorutogo.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/91914746685.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607827565286b---razubogase.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1af97d694---jipigopifebiforanukiw.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c7af72c9957---fupanawujebilepilusali.pdfIn PDF document text
    • http://kientrucsangtrong.com/plus/files/83814411803.pdfIn PDF document text
    • https://singhaniabrothersltd.com/ckeditor/ckfinder/userfiles/files/zowidofakepolul.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f66dd2b63---77851969544.pdfIn PDF document text
    • http://mamtomchabahai.com/uploads/files/files/foporedugisesubaj.pdfIn PDF document text
    • http://elosc.com/upFile/file///ITX202107212204489156.pdfIn PDF document text
    • http://samrayburnclassof1980reunion.com/clients/873185/File/97207877985.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_off0000c094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC094 10992 bytes
SHA-256: 28af092adc8d86c367a03ad4e7045e2adf0728dd3ed895e8d81da1b3abcfe057
font_01_sfnt_off0000d9c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D4 17820 bytes
SHA-256: 8d00945ae055c1c31b3e579e32d27979b0b0f3095c8eae220cac82c88ff2cc60

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