Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ec9feb717d8d6e…

MALICIOUS

PDF

67.8 KB Created: 2021-09-24 23:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d28a7bc0303a41667ef1d0c6cf96071c SHA-1: 2a2a004c721e59559160290691a667735a3129d6 SHA-256: c6ec9feb717d8d6e0384400d407e7b67358191a1a189c9b927f638db77d87bb0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards an attempt to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://irlanc.ru/uplcv?utm_term=unturned+crate+id PDF link annotation
    • https://nikoljski.com/ckfinder/userfiles/files/40062853318.pdfIn PDF document text
    • http://xn--2o2b17g32e8xisqq.com/userData/board/file/74495528093.pdfIn PDF document text
    • http://keralatravelpath.com/uploads/file/virepijawera.pdfIn PDF document text
    • http://sial.pl/galeria/file/toxujozef.pdfIn PDF document text
    • http://fiumaradelsossio.it/userfiles/files/jipimipobawumod.pdfIn PDF document text
    • https://decisionstogo.com/fck_image/file/72839606524.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/togixewe.pdfIn PDF document text
    • https://cqc-material.com/app/webroot/userfiles/files/39730998418.pdfIn PDF document text
    • https://proxkimya.com/resimler/files/41598833525.pdfIn PDF document text
    • http://parcroyale.hk/userfiles/jiloxitizile.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/kujeru.pdfIn PDF document text
    • http://jn-zhsc.com/upload/wusifojar.pdfIn PDF document text
    • https://windfreeklima.com/upload/ckfinder/files/penijebuvufalikopevawif.pdfIn PDF document text
    • https://transmilenio.net/datamont/userfiles/file/98362417493.pdfIn PDF document text
    • http://enslev-anlaegsservice.dk/userfiles/file/72097656527.pdfIn PDF document text
    • http://formpart.com/upload/ckfinder/files/16938950627.pdfIn PDF document text
    • http://siciny.pl/userfiles/file/81359746642.pdfIn PDF document text
    • https://vetamblj.si/ckfinder/userfiles/files/89575463074.pdfIn PDF document text
    • https://remini.hu/userfiles/file/regenosotulawetojizege.pdfIn PDF document text
    • http://tavio.su/files/file/nugevenenixifizoxaj.pdfIn PDF document text
    • https://unitytradecapital.com/ckfinder/userfiles/files/wirowogujido.pdfIn PDF document text
    • http://border-collie.ru/sites/default/files/file/96168035744.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/1c2413c10b0ba07ee95eca6df7ed83a0/fafemita.pdfIn PDF document text
    • https://minhgianggroup.vn/upload/files/91593508948.pdfIn PDF document text
    • http://faw-asia.com/image/upload/files/35329326459.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_off0000ae1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE1C 10136 bytes
SHA-256: c60adf7ae8e457e3bfd0b2185905b86b961decbd1e452bea55c09660cae3f4d6
font_01_sfnt_off0000c4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000dce6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE6 14620 bytes
SHA-256: 887255a8e73b158614fba17a6fb297d4876c37c77ab06959fe1a66c2b9d63957

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