Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0154fa96bba32d…

MALICIOUS

PDF

74.7 KB Created: 2020-12-30 17:08:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: af56753974b0252d8ab5305d9913e973 SHA-1: 3395619f185d6862e53661003b51eb485d352c41 SHA-256: fd0154fa96bba32df00cdf756fe79456fcf1d353337c2cf5fd0126f51ddafe52
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with several pointing to known malicious redirectors and link farms. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate a clear intent to direct users to potentially harmful content. While no scripts were explicitly extracted, the nature of the links suggests a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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 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://traffking.ru/strik?utm_term=cod+warzone+throwing+knife+kills In PDF document text
    • https://febawamowezifu.weebly.com/uploads/1/3/4/5/134594075/domoga_gemeditenuvaz_koferete.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/jimujubane.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461791/normal_5fc7b43a3d9d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fbb148482e34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_5f9489a252012.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_5fbdbc15c9df8.pdfIn PDF document text
    • https://voganolov.weebly.com/uploads/1/3/4/3/134372868/powojididuwozan-bikebazaso-jemaduxuzoxowak.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d757730c-e765-4c60-af70-660891706867/garebiwefobubazuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/044fd32e-26d0-476d-95b4-d07fa0c64e1b/paper._io_2_online_hack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1143010-a5ba-4baf-8288-70a3912d2051/jumusatesir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e048ff52-da21-4a40-bad6-280c14adeaab/bowujuvojepikoketotojivug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a45416cb-fd05-4cd5-b4a6-28ec224634e5/978196773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed3c0fe1-aa19-4bde-9799-d400b7d21c49/piedmont_public_schools_powerschool.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_off0000e87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87B 5280 bytes
SHA-256: 60ad5d64e98cd1ece6f100c2e14d8d9bdf6fffed4420a9e0ca8a69c1431db9a9
font_01_sfnt_off0000fa86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA86 10360 bytes
SHA-256: 88c2eea51c9185f661763d5ae4f9a69a698fe404d41dbf0e034041abad17f134

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