Malicious PDF — malware analysis report

Static analysis result for SHA-256 32df54f082ba7c3d…

MALICIOUS

PDF

68.8 KB Created: 2020-12-16 11:34:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2c4c85f04b3a2d30fbb5a0f44378fdd6 SHA-1: 7212e04af20e015ab112c7b65f5bef0da002f065 SHA-256: 32df54f082ba7c3d0aa5e1037d42904daf92f527553d645cf467bbd9a986919c
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although the document body is heavily corrupted, the presence of a malicious URL is sufficient to infer a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?utm_term=can+braces+cause+nerve+damage In PDF document text
    • https://static.s123-cdn-static.com/uploads/4460060/normal_5fc806b9c452c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384649/normal_5f8e34a490a14.pdfIn PDF document text
    • https://biduvokiket.weebly.com/uploads/1/3/4/3/134367510/refupimafam-lusagutipu-rubomowikaraku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387232/normal_5f93bfa4baa6b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497368/normal_5fc9d5c630588.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418184/normal_5f9d311d8f8da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4f926a879396864223f82/t/5fcfa00964290b1c3ddfa0a2/1607442442531/48801562276.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc185bea8793968640cb600/t/5fc33a5818e72e5fdb40a05f/1606629977740/unit_of_account_costs_of_inflation_example.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06ef3116eb00e3c49974f/t/5fc35ad1f81c9a2a0c0d0c9d/1606638292318/93141245329.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/design_background_powerpoint_2007_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/20647059619.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/mipuwidebifazoxoxel.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/donejuxaru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8ab303f-f02a-4913-9fc2-4088838a3f17/java_software_solutions_9th_edition_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2395cce-93c2-45a2-a37a-642a1e8a2420/39697644978.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_off0000d215.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD215 5332 bytes
SHA-256: 58b27d758aadfc19f4277e29b6b542cd990489fc1722bb48b5b59de12e853a05
font_01_sfnt_off0000e41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE41C 10124 bytes
SHA-256: 28f49f2d9dbce1e624dd6cd90c9e24880c7d714bdb1a68ddb5a4d8d8046db64d

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