Malicious PDF — malware analysis report

Static analysis result for SHA-256 88705d5709607630…

MALICIOUS

PDF

69.7 KB Created: 2021-03-17 13:36:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4f07012ec880c52940739fdfca3ea794 SHA-1: 52340304d6f38e85125419ca0fcd57edf32f060f SHA-256: 88705d5709607630dca3ee3b94a5356f322351254a66430fb2010799d6724f3e
184 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically designed to lead users to scam websites. The document body, though heavily obfuscated, contains keywords related to 'war robots hack no survey', reinforcing the phishing lure. The presence of multiple disposable hosting links further indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=war+robots+hack+no+survey In PDF document text
    • http://mimivamefigupe.sportsontheweb.net/dujoginiwixo.pdfIn PDF document text
    • https://cdn.sqhk.co/wopidevepip/5foifOW/femuxadalexe.pdfIn PDF document text
    • http://masanakepatarar.iblogger.org/xutusoses.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/gv6gfsr/58302211432.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/fazedeleforajoxolutelige.pdfIn PDF document text
    • http://lasomupigo.iblogger.org/ley_de_condominios_guadalajara_jalisco.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/boss_ls_2.pdfIn PDF document text
    • http://foramodosug.mygamesonline.org/jinakolu.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/rejarivozixi.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/nademopor/consumer_reports_best_small_suv_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/drum_patterns_for_different_genres.pdfIn PDF document text
    • http://muvuxuduxe.epizy.com/how_to_hang_wood_without_nails.pdfIn PDF document text
    • https://6c71f620-b6e5-46cc-9e58-526c5f0a7a41.filesusr.com/ugd/1c90dc_990591506ef34689b60112dd49ec5733.pdf?index=trueIn PDF document text
    • http://durunorutap.epizy.com/waxidetaronuwifig.pdfIn PDF document text
    • http://gugefojekasarul.epizy.com/minipixuroboji.pdfIn PDF document text
    • http://wuzuferopo.epizy.com/katefumurelutetaposi.pdfIn PDF document text
    • http://motojanafit.epizy.com/taxirijowelomena.pdfIn PDF document text
    • https://777dd155-384c-4f1d-a337-8f27b94bb056.filesusr.com/ugd/1ecdae_94e0057933594aff9247c1536368c59c.pdf?index=trueIn PDF document text
    • http://gamebunamol.rf.gd/zagejipevibubuket.pdfIn PDF document text
    • https://40e214c1-1950-44e8-a195-e2c6eeb23253.filesusr.com/ugd/a517f4_8dfafb1d49e54a1bab2489b023abd140.pdf?index=trueIn PDF document text
    • https://tinyurl.com/yIn 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_off0000d663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD663 5232 bytes
SHA-256: 7a3475da22be36fce4d6d5655644c85de321f9eb00db4949ab7d829aedefe7f3
font_01_sfnt_off0000e840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE840 9832 bytes
SHA-256: 7019898284f7ffe56dbf1ca4ce57b1ca0a82a8ddff8a4d38b33fa066739f8064

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