Malicious PDF — malware analysis report

Static analysis result for SHA-256 705a642e46e13dc4…

MALICIOUS

PDF

74.6 KB Created: 2021-02-15 01:39:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: c11338890cc2c2eb0c0f6bce01f539de SHA-1: 7ff17e49133f5a827bef48e4060f7a350428e1b4 SHA-256: 705a642e46e13dc492a93b3162ea2496334653beb88dcda3db990cd38b42a827
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or SEO spam campaign. The presence of a URL related to 'genesis mining lifetime contract' indicates a potential lure for phishing or fraudulent schemes. ClamAV and ML classifiers also flagged this PDF as malicious, likely due to its structure and embedded links.

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://seumenha.ru/wix?keyword=genesis+mining+lifetime+contract PDF link annotation
    • https://sogifeni.weebly.com/uploads/1/3/2/7/132712483/7129640.pdfIn PDF document text
    • https://visofebofoxofub.weebly.com/uploads/1/3/0/8/130814652/waziliger-dunop-fotut-tadaza.pdfIn PDF document text
    • https://cdn.sqhk.co/silonifer/icibgc8/54430095023.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373516/normal_5ff796cc238d3.pdfIn PDF document text
    • http://piredvizhnik.com/varolimon78ij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465701/normal_600e0fa8585ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406787/normal_5fdee5de824ae.pdfIn PDF document text
    • https://nemimatavowep.weebly.com/uploads/1/3/4/6/134692492/6254892.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_601153928a38a.pdfIn PDF document text
    • http://shoop-fl.ru/molapiwnahmg.pdfIn PDF document text
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/najutopexubukewi.pdfIn PDF document text
    • https://widadujas.weebly.com/uploads/1/3/1/1/131163760/durarife.pdfIn PDF document text
    • http://lewuvajenajen.iblogger.org/xesosisusesivawako.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rajixubododafu.epizy.com/converting_decimal_degrees_to_dms_worksheet.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_off0000e6d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D5 5232 bytes
SHA-256: 3e55d13cff91ed317c9c504f3f1736064f12cddd060ac9cafd89b14557a866e9
font_01_sfnt_off0000f892.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF892 10676 bytes
SHA-256: e2bae232e4928f2087799f514e63def68d78ec76092841b8b404ae8a9e8188f7

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