Malicious PDF — malware analysis report

Static analysis result for SHA-256 614f97daf46817df…

MALICIOUS

PDF

87.5 KB Created: 2021-03-17 05:31:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bc727de58e0663f4c88251aa165fd6d5 SHA-1: 2512df4451420dec8efa3846c5aec02bb82416b3 SHA-256: 614f97daf46817df5550c5ec1ff8a9df8e689d83cde7b54dba26f71949b5a462
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm, with a high ML score and ClamAV detection indicating malicious intent. The document contains numerous external URIs, including suspicious ones like 'https://lozipotod.ru/strik?utm_term=50+shades+of+grey+movie+order', suggesting it's designed to redirect users to potentially harmful content. No scripts were extracted, but the PDF structure itself is indicative of a phishing or spam campaign.

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://lozipotod.ru/strik?utm_term=50+shades+of+grey+movie+order PDF link annotation
    • https://cdn.sqhk.co/pifixijowoka/Vhjggjg/acrylic_nails_designs_black_and_gold.pdfIn PDF document text
    • https://cdn.sqhk.co/kapopuvida/7jhif1K/police_car_siren_sound_mp3_download_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/nawamuzimosu/Xggcha6/soluriziliw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kakogajoxe.epizy.com/locomotion_score_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71d09c4f-4460-4348-9976-cbcbf56cab26/jibovuxo.pdfIn PDF document text
    • http://suzujikuluvujov.rf.gd/munagaxixi.pdfIn PDF document text
    • http://wepukuge.epizy.com/81666155217.pdfIn PDF document text
    • http://sogonuvusawi.epizy.com/82996268776.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf2aa385-d6ff-43a3-8f51-3246a4dd669d/no_fear_shakespeare_twelfth_night_act_2_scene_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46deab4c-ded0-4d2c-bcd6-154afcb6e8d0/bimilelovixavenemidu.pdfIn PDF document text
    • http://kujujonagojatu.epizy.com/midubogudibeg.pdfIn PDF document text
    • https://88bec3ce-9cdd-4818-a95b-bcf8ac49d1e7.filesusr.com/ugd/72df48_9e8a1b8046094f528de6e4e9b75dd7c7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/07dbf0d6-cbdc-49f5-bea3-213ca8f3f58c/moto_x_2nd_generation_flash_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24bab684-75fb-47f7-863f-07f61be56c72/80614876020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4eb4407-82ab-4e42-9c53-0fb8759c8d6d/55254596561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39f017a9-a496-4b3b-852d-1213a4694134/finding_nemo_food_chain_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ee7ff6-1d20-494c-a22d-38b11834d4d0/how_to_fix_a_small_leak_in_oil_tank.pdfIn PDF document text
    • https://61736296-a7da-4228-a4f2-5a582bd9a3aa.filesusr.com/ugd/1c12ee_c8995dfe720e452c99a1963d0ac6a7ca.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f647015-2661-41e4-8f9e-05d2e2b2c4f1/26517587339.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_off0001137b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137B 5620 bytes
SHA-256: cd2209899f09bc6880ab79076af092d1ad52f17e6800c9ff776b5e5505236b99
font_01_sfnt_off00012682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12682 12964 bytes
SHA-256: 4cecd7fea30c952b280ad12594dc56e892395cfb27939f3d0c04a8c0017ca6e0