Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b2a1eba428f831…

MALICIOUS

PDF

85.3 KB Created: 2021-09-15 18:30:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 9de803c17999bc14aa4a4336839a845f SHA-1: 316c88cb1f629c20cbf7b2ae1745e04ae9088aa9 SHA-256: b5b2a1eba428f83165b4b8a7bfca333153523190e50b9f73165bd8d4542a956e
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, including those hosted on compromised CMS platforms and disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a visual download button further supports a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 8

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • 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 link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pixomot.ru/uplcv?utm_term=android+applications+full+cracked PDF link annotation
    • http://186086.com/upload/files/fifotigekeginesemoxu.pdfIn PDF document text
    • https://alperbehang.nl/userfiles/file/nesupawopadawuwifojale.pdfIn PDF document text
    • https://tlkingatlan.hu/kepek/other/file/bumeximifoduve.pdfIn PDF document text
    • https://keluargamimpi2.com/contents/files/11330897674.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed10f51b28---voniletevu.pdfIn PDF document text
    • http://pokewaveanaheim.com/uploads/files/16900883190.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16136682ea7541---nolibibi.pdfIn PDF document text
    • https://mimpiindah88.com/contents/files/1060329310.pdfIn PDF document text
    • https://hoavily.com/uploads/files/82964025671.pdfIn PDF document text
    • http://vantaidongsaigon.com/uploads/files/20606363271.pdfIn PDF document text
    • http://mylodge-naoshima.com/images/blog/file/rexozipofewabepijadalava.pdfIn PDF document text
    • http://shyjjc.com/v15/Upload/file/202199751513224.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161364292c615a---bujet.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dcba6b2119---sojuziwidejana.pdfIn PDF document text
    • https://aslplastic.com/ckfinder/userfiles/files/74543242895.pdfIn PDF document text
    • http://savitaco.com/uploads/images/files/vokinipoboforo.pdfIn PDF document text
    • http://kingsfci.com/userfiles/file/livareka.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/sagamolizefefu.pdfIn PDF document text
    • http://suamanhinhlcd.net/userfiles/file/50477325254.pdfIn PDF document text
    • http://residenzaeden-albisola.com/userfiles/files/wemoguwiguxejajes.pdfIn PDF document text
    • http://innovatepc.com/userfiles/file/86293712061.pdfIn PDF document text
    • http://foodchemsino.com/d/files/43826616130.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/161334e2e8db8f---puxovewekazikux.pdfIn PDF document text
    • http://heimundsicherheit.de/userfiles/file/44651508500.pdfIn PDF document text
    • https://solelane.com/ckfinder/userfiles/files/muvonamovimedipuzenizewun.pdfIn PDF document text
    • http://www.sosonomo.com/ckfinder/userfiles/files/84407237008.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE705 10788 bytes
SHA-256: 266faeb1a391d53c5d2589681bdecd59529fdc29a7c621b88c0ab530d777ccd8
font_01_sfnt_off00010002.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10002 18380 bytes
SHA-256: cde4b281b1596159241c184b0199ddc3b2426c11406802802339e27d1eecb8e7
font_02_sfnt_off00012fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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