Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efc62367c8ed6a1…

MALICIOUS

PDF

74.5 KB Created: 2021-09-12 22:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 97ed06735cd9e731ddeaa8a94241bc3e SHA-1: 9a402df89bfe82a1598c3974263565a6fa1a6a65 SHA-256: 2efc62367c8ed6a19452b8a5b47a1f7313b2c68b92c5414ed88a1eff86d7a51e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are part of a link farm designed to redirect users to potentially malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of a URL with a 'utm_term' parameter suggesting a lure indicate a phishing or scam attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://garglob.ru/uplcv?utm_term=avakin+life+unlimited+avacoins+2021 PDF link annotation
    • http://chikatere.com/Upload/files/2317761368.pdfIn PDF document text
    • http://nitexprofi.cz/userfiles/file/xemusagoni.pdfIn PDF document text
    • https://smwebtechnology.com/arishayurveda.com/userfiles/file/semawekimujufelupivosa.pdfIn PDF document text
    • https://zegaoyun.com/calisma2/files/uploads/43381609183.pdfIn PDF document text
    • https://global-brand.net/userfiles/files/zesaxuguforefop.pdfIn PDF document text
    • http://grafiport.com/userfiles/file/90876362906.pdfIn PDF document text
    • http://keralatravelpath.com/uploads/file/sigikuvusabaj.pdfIn PDF document text
    • https://ibericadearmerias.com/file/didaluj.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/datuzudevis.pdfIn PDF document text
    • http://hastensandbreakfast.nl/userfiles/file/loruzidamudupexomifupuxuj.pdfIn PDF document text
    • http://belgium-ex.com/images/blog/file/fogaxezasisemilitufa.pdfIn PDF document text
    • https://hebatkeren88.com/contents/files/nukagomegu.pdfIn PDF document text
    • http://africanhairbraidingsalon.com/userfiles/file/rasomak.pdfIn PDF document text
    • https://cambodiadriverservice.com/userfiles/file/27943655298.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0881d9dd7---83735370994.pdfIn PDF document text
    • http://manvilastrust-org.bvirani.com/ckfinder/userfiles/files/xapazebixiz.pdfIn PDF document text
    • http://bangiyaparishadtoronto.ca/bpt/editor/uploadfiles/6808966838.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/76759815065.pdfIn PDF document text
    • https://lotteppta.net/beta/assets/file/10382601987.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/0ujfhtc07pl0krthl4tahlv3e8/lajidixipipawesimifade.pdfIn PDF document text
    • https://elitstroycraft.ru/source/file/40498068264.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_off0000bcb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCB9 17532 bytes
SHA-256: 7e5cbdef516a7d6dd3fb46326f8508ed9f949a3d1a1877ff6eeb04d7aeaca450
font_01_sfnt_off0000ea21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA21 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10238 11068 bytes
SHA-256: 5e787d6d03dee044b574b874e646172b1fae59108fe6e7cf367e5ba588cfd198

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