Malicious PDF — malware analysis report

Static analysis result for SHA-256 699beb9a377cc93e…

MALICIOUS

PDF

91.9 KB Created: 2021-08-24 09:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: fff031b3508535523a5c5fef0f0d9883 SHA-1: e5f58353ee5b9bd43ae08a462abbd41c442a543a SHA-256: 699beb9a377cc93e7b36757b16d038526d43703907bb67e73c244cfa5f18f9b4
236 Risk Score

Malware Insights

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

This PDF document, detected by ClamAV as Pdf.Phishing.Trojan, employs social engineering tactics to lure the user into executing commands. Heuristics indicate it's a link farm on compromised CMS uploads and disposable hosting, likely serving as a lure for further malicious activity. The document body is heavily obfuscated, but the presence of heuristics like 'SE_CLIPBOARD_COMMAND_LURE' and 'SE_CLICKFIX' strongly suggests an attempt to trick the user into running arbitrary commands via copy-pasting into a shell.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://laborke.ru/uplcv?utm_term=changing+text+color+in+pdf PDF link annotation
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/06643a85c781a6228026528872288125/mafojego.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/hts7a8oh6jbr075s6nf6l4g8a4/85189088603.pdfIn PDF document text
    • http://tiga.co.th/ckfinder/userfiles/files/29986245555.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/cf34d9ab58fd623fcb1ed2d0687e5175/27222800786.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/5v4ft1j77ros051rqubph8dnv0/52045786902.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/91b91fac7b0bd0c9982598692b42ff68/41700701734.pdfIn PDF document text
    • http://guitarenko.fr/img/files/tesafax.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f460995e65---47106251068.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/41803becdf06ec0727972defc866b4f2/modofu.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/kepajezefapiwapalanen.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/33bd5f6849693be89564f1845b96bede/rutavemipu.pdfIn PDF document text
    • http://banghetretunhien.com/media/ftp/file/puligikomelosakesiwat.pdfIn PDF document text
    • http://0-50.ru/userfiles/file/safizaxadowenolodadaw.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/apj9tdcrkiffplcr1pjmlon124/89602207758.pdfIn PDF document text
    • http://amsaneeraus.fi/userfiles/files/vofepinafala.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/15139817329.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/7fihfso64hipdeo7lusqq0f96j/fikojego.pdfIn PDF document text
    • http://namjapizza.com/app/webroot/files/satugox.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/78006129189.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/78245371023.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/4bfe77cf50741aeca68475614dd54d40/48829733362.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/92558706737.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4243c893d---36177231430.pdfIn PDF document text
    • 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_off00010266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10266 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A78 17504 bytes
SHA-256: a66ec2372a61cdb177b4a864ed5729aa908fbafbe2b425d39193c0e118f74691
font_02_sfnt_off000147e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147E5 10864 bytes
SHA-256: a079ca1c3e3e337eb2e04816c074b53cfac720c11f0c06cda389fbe44c4a9ee1

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