Malicious PDF — malware analysis report

Static analysis result for SHA-256 060ce5345ae2b5fa…

MALICIOUS

PDF

77.2 KB Created: 2021-09-15 08:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ba29237bdd51de5dc41026375eafbd55 SHA-1: 51317064ff0120159c6fe227d29c07ac21e702bb SHA-256: 060ce5345ae2b5fae8877ccfb8aa50a168f7589e75645534d0f606fec34cb23c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs that point to various websites, many of which appear to be compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document's primary purpose is to act as a link farm, likely to redirect users to malicious content or phishing sites. No scripts were extracted, but the presence of multiple external URIs suggests a redirection or download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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 https://huntic.ru/uplcv?utm_term=backuptrans+iphone+whatsapp+transfer+license+key PDF link annotation
    • https://espritgt.com/userfiles/file/74293530814.pdfIn PDF document text
    • https://barcelonacentremedic.cat/files/galeria/files/33740237284.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/s5i0pcoeg0o4ar5a0pcdq34u39/2955277804.pdfIn PDF document text
    • http://ozanatalan.com/iboard/includes/userfiles/files/1943428258.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/lugivalifobakima.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/66968366951.pdfIn PDF document text
    • https://svingenieria.cl/userfiles/file/xadogipexigesuzasazojedo.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///37573272145.pdfIn PDF document text
    • https://wwa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/tizotipa.pdfIn PDF document text
    • http://jfe.hk/userfiles/24662526423.pdfIn PDF document text
    • http://daiichilogistics.com/uploads/news_file/28992601404.pdfIn PDF document text
    • http://tieulongcopro.com/luutru/files/gitasidawuv.pdfIn PDF document text
    • https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16133c58522661---kunodevaxanorelejeduteb.pdfIn PDF document text
    • https://km2804.com/ckupload/files/desopuno.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/34773415032.pdfIn PDF document text
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/lovatizukomikofoda.pdfIn PDF document text
    • https://procogs.com/FCKeditor/file/80698452195.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/66428418765.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/vc9dm4a7num73fdt2b3t1amt3k/muripawomulepexudivalig.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/753170616.pdfIn PDF document text
    • https://sanmuabancongty.vn/images/content/files/teregupiwon.pdfIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/2641ed67cd8d212782dcee5cd2f7b3b2.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/kafavixilabebi.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/a607ab6c8f5d924012c919ce7fcaa7e9/74983029803.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_off0000c766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC766 17712 bytes
SHA-256: 600d32eb4e6d1c0cc5f9d9122b0ada89132ca05a1118fd5341ac47c77064fa28
font_01_sfnt_off0000f553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF553 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D6A 11024 bytes
SHA-256: 18f5357ade5c3987d7d278500aa18a0f3a468f69bdad48f0f20147843d72b131

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