Malicious PDF — malware analysis report

Static analysis result for SHA-256 48886e690df6ba42…

MALICIOUS

PDF

89.0 KB Created: 2021-07-20 10:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: cdcdad31761a7d0e2c0b3961478e422d SHA-1: ccb6e4910997720a950aef33de97608b2fe87402 SHA-256: 48886e690df6ba42255efb7788a5a44c2ac35cde7e1bb141118ad0c360af6e62
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers, indicating malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of multiple links on potentially compromised or disposable domains supports a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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 http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609abbf7c54db---xesofumiki.pdf In PDF document text
    • https://jpjplumbingandheating.com/FCKeditor/file/84974748232.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/77d51b332c04fa66cdec77ce1fcb3a5c/15593888269.pdfIn PDF document text
    • https://sukaunited4d.vip/contents//files/luvilexibop.pdfIn PDF document text
    • http://wpscrm.in/uploaded_files/userfiles/files/45987809224.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/fepixe.pdfIn PDF document text
    • http://klasykarozrywki.pl/public/images/fck/file/51254409593.pdfIn PDF document text
    • http://liebherr-tr.com/userfiles/file/gunaxipamaj.pdfIn PDF document text
    • https://gulfcans.com/home/madarmun/public_html/gulfcans/images/bulk_images/files/41397015165.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/29627093890.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/so7oo60cecpteldct8b1eqeh55/49155215835.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/27593374837.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160705a1b1c4bc---solutibarunurudilo.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/9a2f0f8263b3c77e401c9ef74685a954/pewinag.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071578141cff---45618089658.pdfIn PDF document text
    • https://apz-arte.com/ckfinder/userfiles/files/nabemativagimexedarem.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/gapf5q334kudrr0738l0jfsj23/71907555767.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/4af8ca018e98f31bf2182f51713b4fd2/viwalupisitofefovivowu.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/b8e44f49c1029332365967afce0764b8/ximofurevuramut.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f340179ec0---kofofetufimakawabuxi.pdfIn PDF document text
    • http://www.pethouse.es/ckfinder/userfiles/files/relifaralematikamixiduwev.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/uci2c4p2nn094k1s2pld7rpbg0/51556213347.pdfIn PDF document text
    • https://babetravelling.com/ckfinder/userfiles2/files/tusefufizef.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7af734d2d---goveboponesosuviluvi.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160843629267ec---gozozesegobejivuluvafufa.pdfIn PDF document text
    • http://mitcostruttori.it/userfiles/files/jetelegeludulogolaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=according+to+the+preamble+to+the+constitution+what+is+the+purpose+of+governmentPDF link annotation
    • https://scroll.in/article/862935/the-bjp-is-wrong-merely-removing-the-word-secular-fIn 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_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 17020 bytes
SHA-256: 4032f621495e21baea4bb9deb134a0a69533a1805361ee43eb22101428d29383
font_01_sfnt_off00012334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12334 11440 bytes
SHA-256: 384c318a12079822e9ce0e66ef0621fdbd4ba6d09e3e05ed8a1a59c189494038
font_02_sfnt_off00013db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1