Malicious PDF — malware analysis report

Static analysis result for SHA-256 daeff3a862dac1db…

MALICIOUS

PDF

74.2 KB Created: 2021-08-29 13:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b9b134d85d221b6a90b59746f66e719a SHA-1: 76831ecd5e45bf2a037259fb5594b743956b491a SHA-256: daeff3a862dac1dbe1726aebd40edb700591139bae672a6c7bb7e3e7df1b855b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document instructs the user to copy and paste content into a shell, a common tactic for executing malicious commands. Numerous URLs were extracted, many pointing to compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution attempt. The document's structure and embedded links are consistent with a phishing lure, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://aashianarealty.com/file/mejopo.pdf In PDF document text
    • https://zemiigori.com/uploads/file/dubez.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df7e533ba38---68236153999.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/pujirebuludomim.pdfIn PDF document text
    • https://empylean.com/wp-content/plugins/super-forms/uploads/php/files/alg9e7b6r1vovdibnig3vgjf03/95538854696.pdfIn PDF document text
    • https://cuacuonbentre.com/upload/files/5684847551.pdfIn PDF document text
    • http://gillsandgeckos.com/userfiles/file/31249181845.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/2e9c343e0f5bdfa9ff4f491095d7bb3f/fikodoxoroj.pdfIn PDF document text
    • http://reflita.lt/uploads/files/43584437456.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/573d732fe5932abc6ac787523847a9b5/8406598406.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af88297f2b7---47697462770.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/00d31f334969d20a2be721bd458e3b50/fawip.pdfIn PDF document text
    • http://dh-life.com/ckfinder/userfiles/files/xekugewu.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608ed359280da---78947173832.pdfIn PDF document text
    • http://ukkies.be/userfiles/file/ribawepotesoxovelolopo.pdfIn PDF document text
    • http://midel.me/userfiles/file/fusanowari.pdfIn PDF document text
    • http://frigotechreina.com/userfiles/files/61207583583.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/makifobimenelozojomugolu.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/9b5759461cf2eb75dc4688eb5e97037e/81697763885.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/pudifuwusevotere.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/gujodigivulevab.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/1076fdd7f0f1b427aa0337d5ebd46c1e/nekanamosizodevamubiwuje.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=err_name_not_resolved+android+studioPDF 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_off0000bfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB3 10588 bytes
SHA-256: 168a5713d0129bbbaa9d84c513daeacbe52f288687aaee46622b79c27c8a4e8a
font_01_sfnt_off0000d7e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000eff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF2 16688 bytes
SHA-256: 4314a6c72e273d7dd349ca03a18f7846342371506143916d57070ffec4b6782a

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