Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be920b33faba7b9…

MALICIOUS

PDF

72.0 KB Created: 2020-12-30 20:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 49ac1005dc3428ac37a50e38575ce06d SHA-1: eb626fb89a867fa4f07aac40a9e650bb5e5f6a8d SHA-256: 1be920b33faba7b95f969fa41570c443ff3f31221c7351ccf4816c9edbd0a824
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to redirector infrastructure and link farms, indicating a phishing or malware distribution campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ggtraff.ru/123?utm_term=my+dad%2527s+second+cousin+is+my In PDF document text
    • https://cdn.sqhk.co/dozumapufa/bFvmSja/translate_spanish_to_english_using_camera.pdfIn PDF document text
    • https://niresofitize.weebly.com/uploads/1/3/4/5/134576450/4701187.pdfIn PDF document text
    • https://vobogokofudukig.weebly.com/uploads/1/3/0/7/130775751/kasujexegimuka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469640/normal_5faa16dcd2a38.pdfIn PDF document text
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/nuwaji.pdfIn PDF document text
    • https://gojudewusidaza.weebly.com/uploads/1/3/4/8/134888042/silumamibozis.pdfIn PDF document text
    • https://zufakuka.weebly.com/uploads/1/3/4/3/134343409/zowonamobexam_pomajasuvo_dataviz.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/nagev/58693163389.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/bootstrap_templates_admin_responsive.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/witch_of_the_swamp_settlers_online.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/leatherman_charge_tti_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/3382437639.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_off0000de9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9D 5096 bytes
SHA-256: dec59a7596d892f85e28c009884798ca9dcbc45c1cef95a7e8b58f7680331475
font_01_sfnt_off0000efff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFF 10336 bytes
SHA-256: ffafa61634e1ebdd211331253e08c46cb9370b44275ee0c9012eb387f429d451

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