Malicious PDF — malware analysis report

Static analysis result for SHA-256 8797850bafa6e805…

MALICIOUS

PDF

104.0 KB Created: 2021-06-29 03:01:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f606b429be8f29e4b6ef42bcff7ade7d SHA-1: 6149dd7b73b6da5148010b756243fc0a59cc03f6 SHA-256: 8797850bafa6e805bb11f544f6b4fe2bc2a5b1670883a3d970228b360f4127f5
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories. These links likely serve as a lure to download further malicious content or phish users. No scripts were extracted from this sample, but the presence of multiple compromised CMS upload links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

Heuristics 5

  • 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
  • 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://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/16097b653a0877---nawudexuvofilusuzir.pdf
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1bbfe94f84---joxupuvigozotu.pdf
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efa3f92151---murepurunigojuka.pdf
    • http://asiavent.com/UserFiles/file///foridujevazav.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5127b88a06---80182428558.pdf
    • http://slsnn.ru/content/file/mowujiragi.pdf
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160957e1a097e4---kixigikozosetavoje.pdf
    • http://vtvxm.vn/userfiles/file/51440478688.pdf
    • http://airsoft1.ro/files/file/bidesefepevofivutili.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb567c3efa---riwujoro.pdf
    • http://31kouqiang.com/userfiles/file/1623701250.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609026cd3b32b.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160987dd999f8d---midatapufukikilulile.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160871482e2a8c---5752748364.pdf
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/sp9ud2f87sbi1db1fs7qqvtdj7/97351753797.pdf
    • http://casier-a-bouteilles.com/file/13942194259.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/1cb5ba66a8efd89096234827db075596/97576195481.pdf
    • https://soosekszer.hu/upload/files/85548590518.pdf
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/b1op2uhjmq5605jlsel62mie6c/46962091304.pdf
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/160ceb4c2d94d7---9628622567.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b46647042ef---95343811579.pdf
    • http://altelaw.com/uploads/image/file/tugosodibufad.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d429177168---64400675523.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b07fad76636---11231175441.pdf
    • http://colescastle.com/clients/875019/File/zupobezolikebijudapivalo.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=inherited+and+acquired+characteristics
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000181bb.bin
79454e0fdba054d3b059feceef391e02ff77fb2e8e41138af420aa5da961ac1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x181BB 10496 bytes

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