Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2218de8865a727a…

MALICIOUS

PDF

70.0 KB Created: 2021-04-24 13:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 957caa311212d4bf6c21f963ea78c342 SHA-1: 5bd565d56cb6013bb17914e0cc7e5d3e4c664a70 SHA-256: b2218de8865a727a14e519802b4eda930f390cd83eb9638668b1317098ed8570
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous external URLs points to an attempt to redirect the user to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/strik?utm_term=what+are+examples+of+safety
    • http://heleogose.online/model_3_tesla_price_20190vglh.pdf
    • https://cdn-cms.f-static.net/uploads/4483623/normal_5fe9fc8dadba0.pdf
    • https://cdn-cms.f-static.net/uploads/4491168/normal_602b3febe608b.pdf
    • https://rurusoweloxefug.weebly.com/uploads/1/3/3/9/133989150/1287433.pdf
    • https://cdn-cms.f-static.net/uploads/4483602/normal_5fd2696625066.pdf
    • http://notirebaxomuw.iblogger.org/paxudogelezug.pdf
    • https://kefagifugujog.weebly.com/uploads/1/3/0/8/130813645/538cff169f85.pdf
    • https://fujireroxilurig.weebly.com/uploads/1/3/4/6/134649353/xedumanesivofagunom.pdf
    • http://shoop-fl.ru/gededipumulabatz5nx2.pdf
    • https://veximukexapi.weebly.com/uploads/1/3/0/9/130969798/nokazakimum_puzusir_digipi.pdf
    • https://ridejotewofo.weebly.com/uploads/1/3/5/3/135314456/pidodoxetolasuk.pdf
    • https://static.s123-cdn-static.com/uploads/4485569/normal_5fff4a7c38382.pdf
    • https://cdn-cms.f-static.net/uploads/4493569/normal_600ed8f444646.pdf
    • http://help-verifiedbadgecenter.com/fruit_and_vegetable_slicer_machine6elvz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tuxexi/bluetooth_printer_android_phone.pdf
    • http://xupudajiwozov.epizy.com/50441902756.pdf
    • https://s3.amazonaws.com/rodiligarexo/unqualified_audit_opinion_report.pdf
    • https://s3.amazonaws.com/busutafitufe/bresser_camera_manual.pdf
    • https://s3.amazonaws.com/sikuva/95636670296.pdf
    • https://s3.amazonaws.com/bisegilupuf/discount_fly_tying_materials.pdf
    • https://s3.amazonaws.com/sojuravewi/dejurisa.pdf
    • https://s3.amazonaws.com/dupula/alameda_county_fictitious_business_name_renewal_form.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4e1.bin
c36bdf44c72fef3134e5323ae7790c6a8c6101395db7aaf7886da77ecb4c3b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E1 5324 bytes
font_01_sfnt_off0000e6e8.bin
1eaa173d849e38948395c5aabfb54d2a24f3fd90f006d496bdd44de5e1c1149f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E8 10624 bytes

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