Malicious PDF — malware analysis report

Static analysis result for SHA-256 01470bcb9e326606…

MALICIOUS

PDF

90.6 KB Created: 2021-08-09 21:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 2687ff3fffa4674391f710a3d273eaa4 SHA-1: af854a435eaccc1df5741b991ce1fd2e83bbcd3e SHA-256: 01470bcb9e3266063c8ffdba862171cc8b4467d641010f4b10578122f8efcbc7
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, some of which are associated with compromised CMS uploads or disposable hosting. The presence of these links suggests an attempt to direct users to potentially harmful content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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
  • 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://meble-tk.pl/userfiles/file/soxomozikalunenosaxezot.pdf In PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/judovutexat.pdfIn PDF document text
    • http://angeladaniel.eu/uploads/files/79069503362.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/b3stgk6e4pquunhajsm9jk34u3/15929287243.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/50859923683.pdfIn PDF document text
    • http://ritadas.in/userfiles/file/70583871220.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/027a5d90ae7bd1fe5748503af9114244/xikigugofojanigiba.pdfIn PDF document text
    • http://scbczy.cn/up_files/file/20210721_101534.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/wiberipalalevitedaxak.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/58777734580.pdfIn PDF document text
    • http://prime42.ru/userfiles/files/bofusebelowobamifozekat.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cddacd42478---pulaxunosurevugabur.pdfIn PDF document text
    • http://yangpupark.com/uploadfile/files/45483806266.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfc9680a38---benafuna.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c63a6480e---labasakoj.pdfIn PDF document text
    • https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/cmh7tsip2590inq25tfajpk8cv/xotojas.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/oulvpicm0tqlu8j1l32tebsrc3/vibuf.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/3ce0ltucbsm7o4lomk5e77emgd/foxovomonigixumawavas.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/daxezogiguwerili.pdfIn PDF document text
    • http://tyextractor.com/d/files/zisobigagamuwidogix.pdfIn PDF document text
    • http://birnagarcollege.in/userfiles/file/zekiv.pdfIn PDF document text
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/tosonozotu.pdfIn PDF document text
    • https://bibliotheque.ville.deux-montagnes.qc.ca/ckfinder/userfiles/files/dimekelefologasetupudevug.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072e1133b788---9007429260.pdfIn PDF document text
    • https://cafepiolho.com/uploads/assets/29601430093.pdfIn PDF document text
    • https://fallsplat.se/file/tixolaxod.pdfIn PDF document text
    • http://rapet.hu/files/xenovepasegewufovobafumaz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=what+is+the+main+lesson+of+the+cain+and+abel+storyPDF link annotation
    • 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_off0000fc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC36 16736 bytes
SHA-256: dd92a2e881fcf775b0a1402b6d48c3220aa4a5f42801465c5cb3d8ecc3fa1d9c
font_01_sfnt_off000127b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FCF 10988 bytes
SHA-256: 0119963896ea01ac9eab44c1a9eb471d982d05103fb2ba644326db9e527055c0

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