Malicious PDF — malware analysis report

Static analysis result for SHA-256 296b5bdee643f473…

MALICIOUS

PDF

79.5 KB Created: 2021-03-20 09:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: fa18f7a394d81144800f78a0289815af SHA-1: bdcf668b976deae6856b9b3ef3f581e347e82358 SHA-256: 296b5bdee643f4734ae4a555890b63115821f76a105795bfad707af9203ba0c4
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, suggesting it functions as a link farm. The primary URL, 'https://lozipotod.ru/strik?utm_term=panda+express+use+peanut+oil', is likely part of a phishing or SEO manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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=panda+express+use+peanut+oil PDF link annotation
    • https://vijapuloxo.weebly.com/uploads/1/3/0/7/130775263/dc3661.pdfIn PDF document text
    • https://rijojuno.weebly.com/uploads/1/3/5/3/135310883/jugawizixavazugavu.pdfIn PDF document text
    • https://funobijego.weebly.com/uploads/1/3/1/6/131636789/kuwiwivekevifu.pdfIn PDF document text
    • https://jawoxaze.weebly.com/uploads/1/3/0/9/130968973/sajovi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389604/normal_5ff98988c6819.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375705/normal_5fe3bb0c3ce64.pdfIn PDF document text
    • https://jeketivogusu.weebly.com/uploads/1/3/1/3/131398097/9180286.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/df114e.pdfIn PDF document text
    • https://ganepivojo.weebly.com/uploads/1/3/4/7/134774155/8b83cd63.pdfIn PDF document text
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/vevadazipusapo.pdfIn PDF document text
    • https://bewokeramubi.weebly.com/uploads/1/3/1/6/131636949/sudunilek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_604818dd72d30.pdfIn PDF document text
    • https://xosotujusosevo.weebly.com/uploads/1/3/4/3/134377620/gumipawu-tisudibiduvog-libabe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407991/normal_5ff8a83177332.pdfIn PDF document text
    • https://xupusunozad.weebly.com/uploads/1/3/1/0/131070799/pabavam.pdfIn PDF document text
    • https://sorumawuv.weebly.com/uploads/1/3/4/5/134512036/da9e8827174.pdfIn PDF document text
    • https://wujuwali.weebly.com/uploads/1/3/5/3/135326068/9655835.pdfIn PDF document text
    • https://nemanuvipiza.weebly.com/uploads/1/3/1/3/131398236/5385435.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414360/normal_60384d0e4919d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e484184b-8ac4-45d8-9bed-6a83d9238289/hockey_app_apple_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ef698e4-68d8-4047-acda-e9fe257771d6/joxaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d1f562a-5673-4bf3-8429-b06626429e2c/shark_lightweight_professional_iron_1500_watts_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED5 2900 bytes
SHA-256: 40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306
font_01_sfnt_off0000f919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF919 5020 bytes
SHA-256: 9a5adc732c048fae53c9d3940b17206f18944be9715f22f070a1a9977b274e45
font_02_sfnt_off00010a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3D 10520 bytes
SHA-256: 9120d060e2bc7d0b1a66d6de95db1b6f4d02aa756120aad582eef27d47837405