Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dee7322cee323be…

MALICIOUS

PDF

78.0 KB Created: 2021-05-31 09:34:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71f16e410b473cf06d24968d06bffed2 SHA-1: 7ec5356af36912d6645c5245259c713f2a214297 SHA-256: 5dee7322cee323be972d8ff7ea06cfa47854407d150457ff6c42c21cb721c11e
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The PDF contains a large number of external links, indicating a link farm strategy. The primary purpose appears to be directing users to potentially malicious websites, as evidenced by the numerous unknown-reputation URLs extracted.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/123?utm_term=parquet+format+benefits
    • https://zedodunojoponex.weebly.com/uploads/1/3/6/0/136083391/kogajekofurugosewik.pdf
    • https://fonevufaj.weebly.com/uploads/1/3/4/4/134444269/3822668.pdf
    • https://cdn-cms.f-static.net/uploads/4481836/normal_603410a97b424.pdf
    • https://vaxamapex.weebly.com/uploads/1/3/4/0/134017084/pizoxelarafo.pdf
    • https://jugizefabugej.weebly.com/uploads/1/3/4/3/134377355/bijodinelilevok.pdf
    • https://wawukonuxoni.weebly.com/uploads/1/3/4/0/134095992/0dcd2ea.pdf
    • https://static.s123-cdn-static.com/uploads/4485927/normal_5ff53bc383348.pdf
    • https://cdn-cms.f-static.net/uploads/4451932/normal_6057fa5a99f58.pdf
    • https://jezilifubi.weebly.com/uploads/1/3/4/8/134887413/togexovotiz.pdf
    • https://sofotegepure.weebly.com/uploads/1/3/4/5/134522016/7c8d992.pdf
    • https://kafowuvipuv.weebly.com/uploads/1/3/4/3/134337110/xuzenane.pdf
    • https://cdn-cms.f-static.net/uploads/4487186/normal_601502ba53e2b.pdf
    • https://nosodawef.weebly.com/uploads/1/3/4/6/134693330/8751923.pdf
    • https://pemovoxi.weebly.com/uploads/1/3/4/6/134680353/vuzakidiluz.pdf
    • https://vejiledulibona.weebly.com/uploads/1/3/4/3/134318828/805e82f3c0b2f.pdf
    • https://cdn-cms.f-static.net/uploads/4402936/normal_604d86751ad6b.pdf
    • https://xefofuzidadadaz.weebly.com/uploads/1/3/4/8/134876265/tiwewowasoxipaw_binugiso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/007e7a3a-b5a0-4a4e-9353-f0380890a374/gojuzujogigopivexekav.pdf
    • https://uploads.strikinglycdn.com/files/b4380db8-4864-40cf-b48e-233c79ccbc38/husqvarna_7021p_manual.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e597.bin
1db2eb4c82059a59f664ed83e92c32b661e9b17d3a8ca6557a1c09f2653356d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE597 5032 bytes
font_01_sfnt_off0000f695.bin
240bc00c3f83d16c846006d127d0e2c39d9cd211f04285dfe383c6edfd7192d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF695 11388 bytes
font_02_sfnt_off00011cf5.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF5 4324 bytes

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