Malicious PDF — malware analysis report

Static analysis result for SHA-256 154d2b5980a3a0d5…

MALICIOUS

PDF

87.7 KB Created: 2021-08-01 07:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 45683ae51b9a508dd047ee21d9995acd SHA-1: d30b831bbf60f7e70a1479cec62c378d93108c78 SHA-256: 154d2b5980a3a0d5a3de6566564ee193d0cc12130d8038e41e7fb486b80c3471
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs users to copy and paste content into a shell, a common technique for executing malicious commands. The numerous embedded URLs, many pointing to compromised WordPress sites, suggest an attempt to host or distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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
  • 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://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd261ed31b0---gujopunaraxewenunike.pdf In PDF document text
    • http://arch-teh.com/pic/userfile/90539741918.pdfIn PDF document text
    • https://anjingliar2.com/contents//files/78417983044.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c1f217e0fb---39448987576.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608cee214918f---kikosaxemuvadap.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/594b0763fc7c1592933d759c3240d121/gajarababove.pdfIn PDF document text
    • http://decaiyun.com/upload/file/21070707242738896768tm3simweud.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/f729f86d7330e8e86818d57c52425aef/31173443811.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3deba0e09---80177350513.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/66616d6e2cd629238ac1d736ec9ee66c/dazokabisirarozusipori.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4279939545---suwawekopuni.pdfIn PDF document text
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/kildpc0ghug5dgcu1ehl1d7hl0/zamivuzozofivotazuladolo.pdfIn PDF document text
    • http://feach.ie/images/uploads/file/57959669954.pdfIn PDF document text
    • http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/83648007063.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/tudonizuboxipigogalavef.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/6704d165f0f99993d1ae4fb0e90c4f89/41103460121.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba8eb21b08b---dojer.pdfIn PDF document text
    • http://cuacongtrinh.vn/upload/files/25978412046.pdfIn PDF document text
    • http://ledspectrumthai.com/ckfinder/userfiles/files/48299524376.pdfIn PDF document text
    • http://zonwering-nederland.eu/ckfinder/userfiles/files/liwadifaduvebe.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160899fbc9acc3---31330229602.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e1c75c717---gapadutowuz.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/j9rgiaeaqpfo8531lesu4iaor0/kunozusejidatijojukade.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=the+ultimate+guide+to+tarot+card+meanings+by+brigit+esselmont+epubPDF 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_off0000efd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD1 18248 bytes
SHA-256: c100c4c0d7c1b786a8cf3a41eafd538992225658301bc1770d9b9015ec608bf8
font_01_sfnt_off00011ef9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF9 11276 bytes
SHA-256: c690ebba137af864b0b38041e420203b23d37a0357caa4b2839fb3337e928aa3
font_02_sfnt_off000138da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1