Malicious PDF — malware analysis report

Static analysis result for SHA-256 30652197c6561843…

MALICIOUS

PDF

81.7 KB Created: 2021-04-22 20:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ca35fec098b9bafd42b020bb03303f3d SHA-1: 8eaf1a71dccf4a51660d0bf9a2cee57dd4f14663 SHA-256: 30652197c656184380838329bcacc2ca7dd555f45cf231553f5958538622717d
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/strik?utm_term=ford+mustang+gt+horsepower+by+year PDF link annotation
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/gagufipa.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvexudid/ghjQuI5/infinite_loop_music_meaning.pdfIn PDF document text
    • https://jubitire.weebly.com/uploads/1/3/4/0/134017652/retozosisubi.pdfIn PDF document text
    • https://lobokepodis.weebly.com/uploads/1/3/1/1/131164506/798c2c45ba24.pdfIn PDF document text
    • http://towudunef.22web.org/rufekudazug.pdfIn PDF document text
    • https://cdn.sqhk.co/vogigoda/jbjhFji/bumomewisi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ritarajekaxitev.rf.gd/30099025015.pdfIn PDF document text
    • http://rexivire.epizy.com/desabafaxasubew.pdfIn PDF document text
    • https://s3.amazonaws.com/lotibabakuj/nedulelodeza.pdfIn PDF document text
    • http://rabuxevemut.rf.gd/ayo_teo_rolex_m4a.pdfIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_3211b45c59da45199558de3e8097c87f.pdf?index=trueIn PDF document text
    • https://a179b4bb-f9e1-4b0b-8685-f881d2afde68.filesusr.com/ugd/0fdb6d_f2d8f065222d4ba7a63cb7d354bdf4c9.pdf?index=trueIn PDF document text
    • https://01c19f78-c7d0-441a-b56a-8672493f87de.filesusr.com/ugd/9d66c7_a3a43adc22f14723b7687a3cd911a808.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/40443751443.pdfIn PDF document text
    • http://pevuzimoba.rf.gd/gatexaxaxosuzi.pdfIn PDF document text
    • http://zasegusof.epizy.com/25444454691.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/31118838591.pdfIn PDF document text
    • https://383fd46b-cc41-47b7-9379-19c19d7bb1fe.filesusr.com/ugd/81c43a_d4c5281daf1a473eb612bdaf2ff95656.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wopari/directions_worksheet_for_grade_4.pdfIn PDF document text
    • https://65d0a56f-4074-4e8f-9acc-29e6f8e8f663.filesusr.com/ugd/37655d_6d1370ca9dfa473b85d86b001b03c404.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10008 5628 bytes
SHA-256: 0499b2a079c33c74dd50d444de031966cecfd742d716fb4ce782ed8bb07deb48
font_01_sfnt_off00011315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11315 11172 bytes
SHA-256: b7b5ba2b93d5a9fcea9ee61a8bea42b7723dc899c213fa6cb58ea05657c2bc81

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