Malicious PDF — malware analysis report

Static analysis result for SHA-256 5968b5e0d34afc61…

MALICIOUS

PDF

84.6 KB Created: 2021-09-11 16:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 7d1b04618914453cbd1fda0dcf1f70ca SHA-1: 9996fa6ecb85ce350f5e5dc8a3ed82f07142fe91 SHA-256: 5968b5e0d34afc61b3b76caa246485f9c7bdb1c011cec774e8d17671dfb67039
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically identifying it as a link farm on disposable hosting. This suggests the primary purpose is to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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://budropol.de/Upload/file/liwozi.pdf In PDF document text
    • https://wspaperbag.com/userfiles/file/5706030247.pdfIn PDF document text
    • http://toyotarent.tw/FileData/ckfinder/files/20210902_D715ED5C13E7A24A.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/85347160209.pdfIn PDF document text
    • http://kovospm.cz/fotky/file/42334659007.pdfIn PDF document text
    • http://gasasosong.com/upload/fckeditor/file/xifop.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/82981237619.pdfIn PDF document text
    • http://kantipursecurity.com/userfiles/file/jozomimudefitojav.pdfIn PDF document text
    • https://digireg.com/upload/tikenile.pdfIn PDF document text
    • https://papiratisk.cz/soubory/ruwunimatagiwima.pdfIn PDF document text
    • http://bjsddesign.com/filespath/files/20210911143753.pdfIn PDF document text
    • https://asesoriagade.com/app/webroot/files/files/21286693250.pdfIn PDF document text
    • http://ellev.fr/upload/files/sanasovonejuzufiwasuzef.pdfIn PDF document text
    • http://homokkepek.hu/editor_up/38134843000.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/90365897682.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/gewulavujajowusega.pdfIn PDF document text
    • http://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/89394966494.pdfIn PDF document text
    • http://humansharehouse.com/userData/board/file/88629614551.pdfIn PDF document text
    • http://pzhjintai.com/upload/files/gogojazagugajujo.pdfIn PDF document text
    • http://oasis-inwaste.asia/files/file/lapugesilexuw.pdfIn PDF document text
    • http://hud101.vn/webroot/img/posts/files/woxujotepig.pdfIn PDF document text
    • https://ymvii.com/admin/upload/files/jogofizixusemoxexadupebo.pdfIn PDF document text
    • http://agrocare.hu/ckfinder/userfiles/files/sipabovowixodakegetujita.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=best+samsung+galaxy+phone+2013PDF 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_off0000e0f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F5 11340 bytes
SHA-256: c89425169581437a122a98ddc2dd486eb6cc53126d3204fee242516b74024674
font_01_sfnt_off0000fba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA7 18388 bytes
SHA-256: b2f9d1e22bc6438df0f363cfdd2e3d57795cb7ce07de2ee94ee3df3fa92068d0
font_02_sfnt_off00012b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B0B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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