Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39cf6e9cbe64283…

MALICIOUS

PDF

73.9 KB Created: 2021-03-02 20:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 179fed2bc7e8301fc342b0a274eea612 SHA-1: b1b0cb243aa6f09e3e9138522de7e40543600d72 SHA-256: c39cf6e9cbe6428390cb018b48d8447804607c7e51b914a2b741b3488efa0abf
134 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous embedded URLs, including one pointing to 'lozipotod.ru', suggesting a phishing or malware distribution attempt. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports a malicious intent, likely related to distributing or hosting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/wix?keyword=gta+4+girlfriends+mod PDF link annotation
    • http://vivubowi.getenjoyment.net/dare_to_prepare_stan_deyo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450156/normal_603b90e437fe9.pdfIn PDF document text
    • http://digosige.mywebcommunity.org/olivetti_lettera_22_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389085/normal_5fcaa61e45b38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445107/normal_5ff3f0d089c30.pdfIn PDF document text
    • http://gonuzigodu.iblogger.org/mu_powerpoint_p_nht.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/doxejuxodigepejal.pdfIn PDF document text
    • https://vezulapas.weebly.com/uploads/1/3/0/9/130969209/xaputopafej_dibato_putamob_sadelela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501645/normal_5fcdaf3ebb705.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/jirebonudur/67457730445.pdfIn PDF document text
    • http://tuwetixa.epizy.com/chromic_app_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/lilakot.pdfIn PDF document text
    • http://notijopozij.epizy.com/gmail_contacts_import_format.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_off0000e2fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FB 5344 bytes
SHA-256: 0844e18b73f994718b74d7e686de7c39afa169fefa4f19830b1b36347d1edd66
font_01_sfnt_off0000f521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF521 11204 bytes
SHA-256: 589f2f3e75e8d091739175c875c816a65ef75514dd9fd5387fabdbcfa590f3a4

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