Malicious PDF — malware analysis report

Static analysis result for SHA-256 9543f50aca6278da…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 09:49:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 045cc8204b43b17d245c85561d73ef08 SHA-1: 904ed3b957cfb04f62ac4a0b498604b450380a48 SHA-256: 9543f50aca6278da8fe8f5d42ee3bde3d5f7549fb8921fe98ccc7a6559a1eeaa
154 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristic firings point towards a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/award?keyword=definicion+de+las+inteligencias+multiples+segun+howard+gardner In PDF document text
    • https://cdn-cms.f-static.net/uploads/4459478/normal_600f39b9e9682.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481994/normal_5ff76a39ec5d3.pdfIn PDF document text
    • http://itali-big.space/geometry_dash_2.2_downloadisuxg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_602ba01c0ee0b.pdfIn PDF document text
    • http://tiburozikibuvex.22web.org/fajinurelivev.pdfIn PDF document text
    • http://revershjtb.site/3d_text_video_maker_software_freeh1ziy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417325/normal_5fee27dead4b7.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/fEvjai0/sonny_with_a_chance_theme_song.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5ffcc78849b4b.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/jdqfhil/diep._io_best_tanks_2020.pdfIn PDF document text
    • http://polnews.xyz/danemaduxnko6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388062/normal_6001380c427f1.pdfIn PDF document text
    • https://cdn.sqhk.co/bojiluxenome/7gePkie/jelemamigirigetokufinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376371/normal_5fe92a2112ffd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://devoleresi.rf.gd/kukaxupizebumejagakeloxam.pdfIn PDF document text
    • http://botetuvixomidiz.epizy.com/dijaliwon.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_off0000dee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE1 5660 bytes
SHA-256: 086ea802a7bec514696ec814766807b5026fc505320144d779e5f8c1c066d017
font_01_sfnt_off0000f219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 10404 bytes
SHA-256: 89985a722213b3a044dfe5c88e3bda6ab272f5b91165f1809b3a5aa327c120d0

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