Malicious PDF — malware analysis report

Static analysis result for SHA-256 032ebf528a8be0bb…

MALICIOUS

PDF

71.9 KB Created: 2021-02-21 12:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2b9304598741861fb0220ff6f357b32c SHA-1: 77392e0d8c16f347812921ef785e134e323a4773 SHA-256: 032ebf528a8be0bbc2f4d7c073a9ab2f58fc6feb8f927cb256510b9c6eee6646
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains and known malicious redirectors, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=how%20to%20change%20whirlpool%20refrigerator%20light%20bulb In PDF document text
    • http://organic100.fun/41569242775m8mld.pdfIn PDF document text
    • http://cryogen.me/46432649846vo44x.pdfIn PDF document text
    • https://fetezubusob.weebly.com/uploads/1/3/2/6/132681625/simiwotasowutaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444374/normal_5ffcd38945c39.pdfIn PDF document text
    • http://wordsidepost.top/french_conjunctions_list7tdsv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483608/normal_60282d179b52e.pdfIn PDF document text
    • http://reassurez-moi-fr.info/wefbee_auto_likerb9idv.pdfIn PDF document text
    • http://varistop.site/numberformat_percentage_javakjacv.pdfIn PDF document text
    • http://dressnbuy.com/registration_form_template_wordpress2zq21.pdfIn PDF document text
    • http://ellmax-site.xyz/fegav0tbyv.pdfIn PDF document text
    • https://wudonazig.weebly.com/uploads/1/3/4/6/134675044/nosodamubikirak_peges.pdfIn PDF document text
    • https://majivuwuwu.weebly.com/uploads/1/3/2/6/132683475/xujigazilolez_wopunovunevewa.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/elearning_heroes_storyline_2_templates.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/duwigavira.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/geradi/20275427406.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE95 5172 bytes
SHA-256: e444d4bc5e0619c3cef0f15ecb4e96abbd0a5527c2fc103fabc79f250710195a
font_01_sfnt_off0000e030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE030 10568 bytes
SHA-256: de8e6c311cdca4bb22bd7aa1af99e934d9173d39c229cbe0b84273cd7e714931
font_02_sfnt_off0001045b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1045B 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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