Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebb94768e09d6f7…

MALICIOUS

PDF

71.1 KB Created: 2020-11-17 07:59:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e88e826ca1ae017506cdcedfe7047125 SHA-1: d25890a1fcf6ffb10a3ce3c07fcc12f0cd6efc9c SHA-256: bebb94768e09d6f74cd7db4dc4f2740866a3efa3c9200e7bbc37856b1d6d61fe
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of multiple unknown URLs suggests these are part of the malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=super+drift+2+hacked PDF link annotation
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/nepakupi-nozav-kikipunure-vazudimuridago.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/pitekozesu.pdfIn PDF document text
    • https://munuvatatopa.weebly.com/uploads/1/3/4/6/134686277/kinapeput_xifulozez_lopuwipadaxaloz_naribegujuwo.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/jidof-zodunoboxurota.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5fb2a650cf011.pdfIn PDF document text
    • https://dekobela.weebly.com/uploads/1/3/4/3/134332871/6b7e3d5ad4255.pdfIn PDF document text
    • https://fuwizugirizuj.weebly.com/uploads/1/3/4/6/134611345/retovepunifeseruturu.pdfIn PDF document text
    • https://pexififowuru.weebly.com/uploads/1/3/4/7/134714045/d7c4f.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/rebakomexusiso_zemagelarew_xituvuf.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/dusubonifu/einstein_middle_school_bell_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/wixikarago/wellcare_prescription_drug_plan_2020_80840.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/desh_pujabarshiki_2019_free_download.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_off0000da01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA01 5332 bytes
SHA-256: ac589e612376bec99af9c8f1600a87175920d7b78c11ef743c9a397a9dde1e28
font_01_sfnt_off0000ec22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC22 10536 bytes
SHA-256: e23b75642620b85e495033d26a7efc459db19d5082965fe86b766d06b830b2e5

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