Malicious PDF — malware analysis report

Static analysis result for SHA-256 7036a337765f9814…

MALICIOUS

PDF

71.2 KB Created: 2021-02-20 05:38:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c2f28e26c9802083d22a4544c481c131 SHA-1: 798cabd7f7d5f7e57423f97fe705570461b8369b SHA-256: 7036a337765f9814f8559132f43f60bc7a94c86d8838b0900d27e062985c13be
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=google+sites+examples In PDF document text
    • https://gokepitamewema.weebly.com/uploads/1/3/5/3/135325242/3adeecad86445b.pdfIn PDF document text
    • https://vorupegesozuzow.weebly.com/uploads/1/3/1/4/131453293/5139522.pdfIn PDF document text
    • http://unlockdeals.shop/449838612063ivzh.pdfIn PDF document text
    • https://kotidureguk.weebly.com/uploads/1/3/0/7/130776457/lokavuletosubas.pdfIn PDF document text
    • http://telemprom.xyz/asa_anesthesiology_meetingyx5la.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/jogevozagakaru_fivapilezomapo_guzeru_lemetumaxuxoz.pdfIn PDF document text
    • http://goods-amzon.com/326465035050g3tz.pdfIn PDF document text
    • https://xeromikivato.weebly.com/uploads/1/3/2/6/132695960/1186303.pdfIn PDF document text
    • http://lozavisimas.22web.org/79703749705.pdfIn PDF document text
    • https://govewusig.weebly.com/uploads/1/3/0/9/130969429/zimuvuvojenubim.pdfIn PDF document text
    • https://vadopesi.weebly.com/uploads/1/3/0/7/130738994/9d77dc924ba372e.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/bSFZq68/kojidovesisoroj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5fedf9d8ed510.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xazikipigenuvi.rf.gd/midmark_m11_ultraclave_chamber_is_full.pdfIn PDF document text
    • http://xelidamos.epizy.com/new_technology_in_automobile_engineering.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_off0000d995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD995 5140 bytes
SHA-256: a05583cced3c8d943b9ffadbc866a36524f7ad63d7beac0254ee2d39d1766b74
font_01_sfnt_off0000eb11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB11 10932 bytes
SHA-256: c2a85269f022b89fd02077484911fd7b900513be85d7ce24561ac31635c7dc8e

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