Malicious PDF — malware analysis report

Static analysis result for SHA-256 945675f4d6c3f2f8…

MALICIOUS

PDF

88.2 KB Created: 2021-02-25 23:03:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 40bcf1b6df2db423f112667300a4d323 SHA-1: 6b2c0d0d18821bf7d2d83352f0f41f2e1cf65e6e SHA-256: 945675f4d6c3f2f8ab439ddaf5f9227696b792c827e836517aaac3bdb831f563
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malware or phish users. The document body, though heavily obfuscated, contains text related to watching a movie online, likely a lure to entice users to click the embedded malicious URLs. The ClamAV detection and ML classifier strongly indicate malicious intent.

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://jacksth.ru/wix?keyword=watch+grandma%2527s+boy+movie+online+free PDF link annotation
    • https://likudone.weebly.com/uploads/1/3/4/6/134681098/2c44d18de2977.pdfIn PDF document text
    • http://fartook.online/black_and_decker_double_flip_waffle_makeru9g8z.pdfIn PDF document text
    • https://foxewazijibaj.weebly.com/uploads/1/3/1/3/131379544/dojogigoxemoxomibe.pdfIn PDF document text
    • https://guwubujurod.weebly.com/uploads/1/3/1/4/131438509/68023.pdfIn PDF document text
    • https://kelulove.weebly.com/uploads/1/3/0/7/130775366/6254916.pdfIn PDF document text
    • https://rilawexiretik.weebly.com/uploads/1/3/4/2/134267086/8511012.pdfIn PDF document text
    • http://kawlites.online/ninja_air_fryer_walmart_canada8y504.pdfIn PDF document text
    • https://lefonoduri.weebly.com/uploads/1/3/5/3/135324857/1030877.pdfIn PDF document text
    • https://gilaxisob.weebly.com/uploads/1/3/1/4/131406303/25ac8ba9af.pdfIn PDF document text
    • http://xapizokawe.iblogger.org/brotherhood_netflix_parents_guide.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/20388612681.pdfIn PDF document text
    • https://duxoberadu.weebly.com/uploads/1/3/4/7/134718286/23ddc991.pdfIn PDF document text
    • https://salexutoxor.weebly.com/uploads/1/3/4/7/134761189/07ad996.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sawujasasit.epizy.com/falcon_4.0_download_free.pdfIn PDF document text
    • http://vidomolojo.epizy.com/lopodojijafim.pdfIn PDF document text
    • http://pabewuvuxaf.onlinewebshop.net/23425933027.pdfIn PDF document text
    • http://pirapisanuton.epizy.com/dewibo.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_off00011d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0D 5784 bytes
SHA-256: 73dca0640e0c200b29a7cc11f86b0832a2f040dd4f271a33b25467192ba9d523
font_01_sfnt_off000130aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130AA 10156 bytes
SHA-256: 7e96dca6ce31fdde51ff6507c3b5c63be1f5bfe19065a3eb7c76645f7dc9063c

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