Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c1a7e4781f3e8e4…

MALICIOUS

PDF

80.0 KB Created: 2021-02-27 21:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 03e50bf48bfe42dbe688dfbd061b89b9 SHA-1: 7080a94f5558fd996d8e12b70fb63f2db6e52a13 SHA-256: 0c1a7e4781f3e8e41807563f070f03bc32375f8567e838fc17774c929ffd6455
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to potentially malicious domains, suggesting an attempt to redirect users to phishing sites or download further malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, reinforcing the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://mezovuduw.ru/wb?keyword=food%20list%20dash%20diet PDF link annotation
    • http://dawexefif.getenjoyment.net/41558183220.pdfIn PDF document text
    • http://cyberlife.store/aroma_10_cup_rice_cooker_inner_potgr9yg.pdfIn PDF document text
    • http://rentline.pro/panelview_plus_firmware_compatibilitytmnp2.pdfIn PDF document text
    • https://zibakuponitek.weebly.com/uploads/1/3/5/3/135303957/karipupidizos.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/lejewenafuzageguned.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzutuse/sxTfZhc/hit_it_big_arizona_lottery.pdfIn PDF document text
    • http://janorewaxeno.mygamesonline.org/jijuxugupulu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374022/normal_603a3de45200d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530429/normal_6020b5e13aa29.pdfIn PDF document text
    • https://cdn.sqhk.co/sudizatase/L4ghgyw/micro_battles_minecraft_server_ip.pdfIn PDF document text
    • http://how2clever.com/ar_rahman_hits_songs_masstamilan1uitn.pdfIn PDF document text
    • https://cdn.sqhk.co/luxixumogez/ijghbje/kopapivog.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/xamibebulosaxug/best_linux_distro_for_building_android.pdfIn PDF document text
    • http://juludiripo.myartsonline.com/vizio_vw26l_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/2327502670.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_off0000ff6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6C 4772 bytes
SHA-256: b77164bccec44808cac0bd631ec47ad92b2c5c8d1ad01dd292d0221b5e8927a6
font_01_sfnt_off00010f9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9E 10340 bytes
SHA-256: 82243ff860f38f0912d3a31b2e898990b42265e23732986f1b4699b6e40bb7bd

Open this report in the interactive analyzer, or submit your own file for analysis.