Malicious PDF — malware analysis report

Static analysis result for SHA-256 073b67448627aa46…

MALICIOUS

PDF

70.3 KB Created: 2021-02-27 13:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ab6e4a8e889102e84222374de04af441 SHA-1: 9c0211d7c34092cf9cf799b268ee92a0ed17e571 SHA-256: 073b67448627aa4673ddb5d7bbcd8749e983cae321992fd40cdcb64ea13af3ff
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links pointing to known malicious redirectors and disposable hosting, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier also strongly flagged this PDF as malicious. The embedded links are designed to redirect users to potentially harmful websites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=maine+little+league+all+star+schedule In PDF document text
    • https://fiwisito.weebly.com/uploads/1/3/4/7/134715438/9997672.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387218/normal_5fee219078ff6.pdfIn PDF document text
    • https://vufobuvi.weebly.com/uploads/1/3/1/1/131163959/buduva_nojavetusas_gumuruxora.pdfIn PDF document text
    • http://curvepreloved.com/marshmello_best_songs_everot5m8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421473/normal_601ef1192b791.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/bupaveg.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/evh_5150_iii_lbx_ii_settings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_6024f8c24f2ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403959/normal_6014c9e65d95d.pdfIn PDF document text
    • http://waferaboteb.mypressonline.com/sufag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412387/normal_5fe2abf60e9ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/westlife_total_eclipse_mp3_download.pdfIn PDF document text
    • http://womawujun.atwebpages.com/95634730396.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BE 5208 bytes
SHA-256: fb73c881a93a6f110ede956eae988249e52005997a0ec18c424479ef3ee6409b
font_01_sfnt_off0000e975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE975 10252 bytes
SHA-256: 58e982e18e2b9768d5a5ede2b2c51afbb7a8ba03868ecabf72e920b6c0c101ed

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