Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade68cd8b79df03b…

MALICIOUS

PDF

91.4 KB Created: 2021-04-09 06:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 149b2af5c57e3a958aa8654a472229e1 SHA-1: bd28012f0a4bc2e2833e1bb067f54f796ff5c949 SHA-256: ade68cd8b79df03ba03d85f39f5cca0e681aa62f46cea9fadee796784fc64943
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the PDF's structure and embedded URLs are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://xezojetit.ru/strik?utm_term=novela+la+metamorfosis+de+franz+kafka+resumen PDF link annotation
    • https://jinijazi.weebly.com/uploads/1/3/4/6/134668286/kesawojoguwatukozon.pdfIn PDF document text
    • https://gukusabijimesop.weebly.com/uploads/1/3/4/7/134761354/2194120.pdfIn PDF document text
    • https://jabizujosewej.weebly.com/uploads/1/3/4/5/134584717/9774515.pdfIn PDF document text
    • https://lalidusuferub.weebly.com/uploads/1/3/4/4/134440540/78c59.pdfIn PDF document text
    • http://gudibetujem.iblogger.org/nifegapolezemiwowaton.pdfIn PDF document text
    • https://fevebelok.weebly.com/uploads/1/3/4/0/134012800/ponopejidufur_vuxosajonu_nanajetazozaro_piwopefagidibo.pdfIn PDF document text
    • http://zonixutazexe.iblogger.org/76586201063.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478926/normal_5fe4c1bf191c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_600dd3424617e.pdfIn PDF document text
    • http://zotokolumo.iblogger.org/10996285040.pdfIn PDF document text
    • https://famotufenimuz.weebly.com/uploads/1/3/4/1/134132127/pobuvewasebajiwinotu.pdfIn PDF document text
    • https://bogezemobazuv.weebly.com/uploads/1/3/1/8/131856224/befakiroxukeku.pdfIn PDF document text
    • https://zudejuzire.weebly.com/uploads/1/3/2/6/132681250/genidufum-dazeleberewomul.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://fb9345b8-40be-4608-a8ff-9c5427dba92f.filesusr.com/ugd/98d639_ee35876ff2754049992638c8f919869a.pdf?index=trueIn PDF document text
    • http://nagikesedogoru.rf.gd/vegujak.pdfIn PDF document text
    • http://satikemapobivix.epizy.com/bombitup_sms_blast_app.pdfIn PDF document text
    • http://rugeritubaduw.epizy.com/diparaxud.pdfIn PDF document text
    • http://babupit.epizy.com/diptera_characteristics.pdfIn PDF document text
    • https://83bd47e3-138d-48d8-8d00-514fe13b91b0.filesusr.com/ugd/c87a2f_042e6f9d73784d2db173ab37be9e8199.pdf?index=trueIn PDF document text
    • http://bovatug.rf.gd/pinitagokakapasijajebo.pdfIn PDF document text
    • https://54d25d35-1219-4e5f-97c3-905e72ea606f.filesusr.com/ugd/6d59ab_f3451eff98944269a8a3369ea9ee98ff.pdf?index=trueIn PDF document text
    • https://df9240ce-57b4-430e-a582-521170ca5232.filesusr.com/ugd/10b03a_b95bf8f37db045538a12b7d64d7e8ee3.pdf?index=trueIn PDF document text
    • http://rimutapewite.rf.gd/duvupugu.pdfIn PDF document text
    • https://254b3b0b-79dc-4992-827c-fd4bb3db3178.filesusr.com/ugd/f515ca_f16a712c718c4c7a862231a773647a11.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000117db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117DB 5076 bytes
SHA-256: 6c617e0720a90ec6f25faa2c0cba6b2304f50d8d58361b0860ae974ba0c5a827
font_01_sfnt_off00012916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12916 11912 bytes
SHA-256: 7d491b42316a7a2e1430cbb3b846e136056b1d2089abdb370997fd18a8e03ac2
font_02_sfnt_off00014fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FCC 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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