Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee3d9ba7802b3e8…

MALICIOUS

PDF

101.3 KB Created: 2021-07-08 08:16:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a78f67d3b1dfd7ad6846ef228ff05dbd SHA-1: 77781f839b12d3b78b83de6549fb7516ab3e982d SHA-256: fee3d9ba7802b3e8b1af80e940abebe4dc511a0e91feb2f990f9ab20788de848
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of many distinct hosts and the use of UTM parameters further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9253

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://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16073ebf578772---botunagitanina.pdf
    • https://telewebmarketing.com/FCKeditor/file/mifukuzejiriboxazez.pdf
    • http://nbnjl.com/userfiles/files/23861213950.pdf
    • http://texasstatealphaxialumnae.com/clients/f/fe/fe72632f573fdc77cca6b85875c63e8a/File/19269461089.pdf
    • http://guides2alpes.org/uploads/file/saxorutafozegurifepiwe.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac0e71c513d---18943930709.pdf
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/80112d6e964049526cb42489ef5e3439/87075647928.pdf
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/7o85u6a2grgt15b9ltucbmt6e3/moniwetapizazi.pdf
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b26c0538588---47991367385.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/vhgo2oot2lbsvop7153lm94nqv/75041343348.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092cc44a72d2---65710626886.pdf
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160da51ea5f230---farabekijefezijoruvalute.pdf
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/160cefc48852a1---46155175475.pdf
    • http://puzynowska-kancelaria.com/userfiles/file/35715046374.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b6df38c28---43982571235.pdf
    • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/16091e616b2319---7711689331.pdf
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606d9816e0a14---88546567320.pdf
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16087192236088---mefenasubobogemolejuxu.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c4275e3504d---64069228338.pdf
    • https://binarbaidrealestate.com/public_html/userfiles/file/lotojasuwozataboxo.pdf
    • http://asiavent.com/UserFiles/file///xogexodes.pdf
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/kflvc32bct5jahvbv0mpj53c11/rigufomuf.pdf
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/0ae1e31f9bfd701040817fe3f15a18a5/funejapi.pdf
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/c20585c969f5733454f7de0115104470/58538461383.pdf
    • https://palcev.ru/userfiles/file/35260121991.pdf
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a190c90d697---ripetefesirunu.pdf
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c41f365349b---xulajesazijadesiw.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=the+meaning+of+spastic
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcff.bin
8f07c44098fccb1423b014cd067dfab71282e475a1ccaea738c1f124bedd1e64		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFF 20760 bytes
font_01_sfnt_off00013101.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13101 16792 bytes
font_02_sfnt_off00014912.bin
238541a24049fe7b06840b566c02a558f4fa096b4ce9b83d9bdf995456f7e9d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14912 16752 bytes
font_03_sfnt_off000160dc.bin
d8c26af1e1d55e9978bdcff8f662e19e5dc184b50a879353b4386491c1784e1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x160DC 10744 bytes
font_04_sfnt_off00017963.bin
20e9cb3ecaedb62a0a3a51badbb4d264202d99d692f69eb3472015390ee37728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17963 2816 bytes

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