Malicious PDF — malware analysis report

Static analysis result for SHA-256 59414ac0e5218a5d…

MALICIOUS

PDF

74.9 KB Created: 2021-06-11 04:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dce1ca350e31f961a9f1d95f03727d70 SHA-1: 0615e3046210cd88084045cf26f7fc7ee478a75f SHA-256: 59414ac0e5218a5dc09973ee520a1ae628a077f0a1a338ff776958ca5624d2e2
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://inwebjor.ru/pbw?utm_term=harry+potter+2+dual+audio PDF link annotation
    • https://kegorobaz.weebly.com/uploads/1/3/5/9/135963119/solaronoxop_kuvutiwovawaz.pdfIn PDF document text
    • https://memudejiremi.weebly.com/uploads/1/3/1/4/131405951/8bbb48.pdfIn PDF document text
    • https://bokavijuporuxeb.weebly.com/uploads/1/3/3/9/133997451/reposutewutipow-gudalomo.pdfIn PDF document text
    • https://rotizakaba.weebly.com/uploads/1/3/4/7/134766425/ganederezofatavaxiv.pdfIn PDF document text
    • https://giromazipudu.weebly.com/uploads/1/3/1/4/131453901/5009011.pdfIn PDF document text
    • https://balolemarivapi.weebly.com/uploads/1/3/5/3/135309218/jiwupisaruk_moladi.pdfIn PDF document text
    • https://jasuxazej.weebly.com/uploads/1/3/4/8/134875243/36817acc.pdfIn PDF document text
    • https://tivubolo.weebly.com/uploads/1/3/1/8/131857038/xidiborinadeva-zutanizur-golizaj.pdfIn PDF document text
    • https://sokimazivad.weebly.com/uploads/1/3/4/6/134620474/9012139.pdfIn PDF document text
    • https://risibazizugati.weebly.com/uploads/1/3/4/7/134710005/7248584.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zelovoguvunu.pbworks.com/f/ver_tres_veces_tu_3msc_pelicula_completa_en_espaol_latino.pdfIn PDF document text
    • http://nomebazeregi.pbworks.com/f/instalar_impresora_epson_l375_wifi_en_mac.pdfIn PDF document text
    • http://kigemulu.pbworks.com/w/file/fetch/144749133/prodigy_p2_brake_controller_installation.pdfIn PDF document text
    • http://sozakuvepar.pbworks.com/f/ruviwumukebofudu.pdfIn PDF document text
    • http://vafobotigef.pbworks.com/f/47416882353.pdfIn PDF document text
    • http://gabumur.pbworks.com/f/68459118750.pdfIn PDF document text
    • http://xanovobuxebo.pbworks.com/f/cursive_handwriting_practice_adults.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB31 4744 bytes
SHA-256: b8b4fb582f2ce6d8a6b1d04b6f1539c2c32a401b0518433fe7e61f63841aa8e4
font_01_sfnt_off0000eb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6D 10876 bytes
SHA-256: eb37d1926be37c2d92594359bbb76dd42a61d7ce78505e706c275498790b2f95
font_02_sfnt_off0001104b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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