Malicious PDF — malware analysis report

Static analysis result for SHA-256 3376097302b07f64…

MALICIOUS

PDF

69.7 KB Created: 2021-09-30 15:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: f110280c5c36f359e6a7850871726a8f SHA-1: 04aa88a29e3c2230ba641a2760e379da61a9fe00 SHA-256: 3376097302b07f64dbfa2feb9f5b789c7b142bd67f51602a0c84ab484799d280
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, including one pointing to a raw IP address and others hosted on compromised WordPress sites and disposable domains. These links likely serve to redirect users to malicious content or download further malware. The presence of embedded JavaScript suggests an attempt to execute code within the user's browser or PDF reader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://garglob.ru/uplcv?utm_term=how+to+do+screen+recording+on+my+phone PDF link annotation
    • http://coutleelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/61664746144.pdfIn PDF document text
    • https://www.jnvhardoi.org/ckfinder/userfiles/files/rotasivuraburolu.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/15972095480.pdfIn PDF document text
    • https://matagujrischool.com/admin/imagetemp1/file/gefuzerolo.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/15915032304.pdfPDF link annotation
    • http://k1a.ru/images/files/file/gibef.pdfIn PDF document text
    • http://soc-in.com/data/media/files/24599951072.pdfIn PDF document text
    • https://12shio1.com/contents/files/buxokomo.pdfIn PDF document text
    • http://ssanadia.in/userfiles/file/57574290954.pdfIn PDF document text
    • https://schmitz.cz/res/file/vabebuwobesukip.pdfIn PDF document text
    • http://potentialdesign.cn/userfiles/file/1632102943.pdfIn PDF document text
    • http://tainanrup.longi.tw/uploadfiles/files/20210930_171104_3528.pdfIn PDF document text
    • http://omonetach.pl/foto/ilustracje/file/39578947291.pdfIn PDF document text
    • http://npcbalkan.net/ckeditor/ckfinder/userfiles/files/tafixaralevijogu.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613da21e47b45---33126912496.pdfIn PDF document text
    • https://cristalparkhotel.com.ve/ckfinder/userfiles/files/xobetebatolize.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/335f6dbc390ed1ab9a77bdd1f2f8df34/fetigaridegibawafin.pdfIn PDF document text
    • https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/varoteduv.pdfIn PDF document text
    • https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/18010583579.pdfIn PDF document text
    • https://h016s5or78-du3.com/contents/files/jitotijofenivorojipejozi.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3c27ghembl0mbdosf3raskeqk6/29390512566.pdfIn PDF document text
    • http://blueleaves.ru/userfiles/file/44839607490.pdfIn PDF document text
    • http://www.cst.rnu.tn/js/ckfinder/userfiles/files/laguk.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_off0000b218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB218 10944 bytes
SHA-256: ad7120e9cb9bb493c2598419b3f85997f21f6b4ab9e7371fccf8257bcba1a1b9
font_01_sfnt_off0000cb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB17 15092 bytes
SHA-256: a95de349a58cc14cd04d68c188efc751fb359a407fac155c835b44477a45ebdb
font_02_sfnt_off0000f0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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