Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff282289d4f7c01…

MALICIOUS

PDF

97.4 KB Created: 2021-04-23 23:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7b10cc0bb5db4382fc471ff7af469a3b SHA-1: cf1fcd49b9c3cc150d780f9c425dc7d3cc6612c9 SHA-256: eff282289d4f7c01f6fe0d02b605a00540d81a0e56a39e433e3e7d5dee572fb4
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm. The primary URL, 'https://lozipotod.ru/strik?utm_term=the+dragon+prince+online+season+3', suggests a lure related to online content. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate malicious intent, likely for SEO manipulation or to direct users to potentially malicious sites. ClamAV detection further supports the malicious classification.

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=the+dragon+prince+online+season+3 PDF link annotation
    • https://jikevumuvovidu.weebly.com/uploads/1/3/4/3/134324483/lebenumijumenapukuga.pdfIn PDF document text
    • http://eliyalte.com/xujusegutobaroouagy.pdfIn PDF document text
    • http://italysummer.space/semugejuwawerumen2d408.pdfIn PDF document text
    • http://helplnstagramcontact6088757.com/lixufugovakutenexerijub2eys.pdfIn PDF document text
    • http://lg-copyright.com/jenazirejusedezukazirimewcszg.pdfIn PDF document text
    • https://wajegeteb.weebly.com/uploads/1/3/4/8/134896445/towadirolix-dudezej-mukitasuvewi-dasakudiko.pdfIn PDF document text
    • http://artrosil.xyz/58098575113tm65g.pdfIn PDF document text
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/kijurej.pdfIn PDF document text
    • https://zanebereraba.weebly.com/uploads/1/3/4/4/134472179/6075406.pdfIn PDF document text
    • https://texupofomisuz.weebly.com/uploads/1/3/4/2/134235579/5073157.pdfIn PDF document text
    • http://1-bog.ru/how_many_points_can_you_miss_on_drivers_testgc6dj.pdfIn PDF document text
    • https://setupazaz.weebly.com/uploads/1/3/4/7/134772318/pupisisipidi_kigekodofoweren_buvutagatuduta_vikijezeru.pdfIn PDF document text
    • http://makedctl.site/lomuvumumusimuw66t7e.pdfIn PDF document text
    • https://pimazapodozem.weebly.com/uploads/1/3/2/8/132814260/lunejazogasonudapow.pdfIn PDF document text
    • https://tigoxugijiwubaz.weebly.com/uploads/1/3/4/3/134315710/6728279.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/kopewidebubemu_rikubizo_wubibulu.pdfIn PDF document text
    • http://my-favshope.online/taxodifofavuxugumifutejoh98.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://69cf8a46-0d3d-4b71-8fd1-93df925da18e.filesusr.com/ugd/e4064d_935ac6a8d5544912a56837a73b987178.pdf?index=trueIn PDF document text
    • https://203e60c5-e32a-4587-ab6d-31d66de6d5b9.filesusr.com/ugd/014c36_1f3f109e728c44789c3c894f3e86c696.pdf?index=trueIn 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_off00013f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F0E 5448 bytes
SHA-256: 502c93c731bdf37e2bdfec60102a76c5d77bad31e855669b23533e7d24fddd90
font_01_sfnt_off00015190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15190 11480 bytes
SHA-256: 9f3dc0a873765166078c934890c9a2861cab1b93e1f9b627b343b49807c72eae