Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b2b49183e7647e9…

MALICIOUS

PDF

71.5 KB Created: 2020-11-17 08:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5fb73afcb8b17288141b60a28a2318b1 SHA-1: 1b89bf13da852a978c106dbf62aedeb870a28ad4 SHA-256: 2b2b49183e7647e995ed1d146bcc46addea1a40bc83af189c9d883bbe865a572
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying it as a link farm and a redirector. One of the primary links points to a known malicious redirector, suggesting an attempt to lead users to harmful content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/123?utm_term=que+se+abra+el+cielo+english In PDF document text
    • https://fipaziditude.weebly.com/uploads/1/3/4/4/134465794/fozozikapegepazojo.pdfIn PDF document text
    • https://lafibovuvi.weebly.com/uploads/1/3/4/6/134653173/d01521fd747528b.pdfIn PDF document text
    • https://fabedajigunud.weebly.com/uploads/1/3/4/4/134480588/fekexekivipidow.pdfIn PDF document text
    • https://sigogaxeba.weebly.com/uploads/1/3/4/6/134620414/59cb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389370/normal_5f96d708672ae.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/a1a46243-d3d9-4606-87bc-1dc1292337be/23204611539.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/jekejuzivedakekosu.pdfIn PDF document text
    • https://s3.amazonaws.com/pojojagajevuxa/all_county_band_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e39fd6e0-3f09-487f-bbe6-aafac43bc673/92632060379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28689803-e1b9-4838-9039-1928f7a30d1e/42436587998.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c05a5cee-9089-400e-ba97-e83724242f33/windows_app_icon_pack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ecf392f-962f-46d0-84a8-5c76455d0a8e/tanasanoxubuwozuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c52c194-12e8-4d9b-83fe-695b00a00054/42198816068.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_off0000c743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC743 4908 bytes
SHA-256: 41d21f78b75fd577bb6dfb25033a8eec5cb03c2161b0ecbb7409f25bec3cba7d
font_01_sfnt_off0000d85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD85C 5264 bytes
SHA-256: 78f32f848999a580d73d2da6d2a6308c7f96daaea6933a5fa30ca33c4804b8ef
font_02_sfnt_off0000ea36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA36 11300 bytes
SHA-256: 52ad56f5a7095a4294990d955a742d80cd7255a9dd10108f5db4d22d13f5a3d3

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