Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce5ac197763fe99…

MALICIOUS

PDF

78.1 KB Created: 2021-09-12 20:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 3174ea431dd5b554982ca338d3bc4a00 SHA-1: 5dd0ca69f8b495df2e7d78830927fd9b9fe38302 SHA-256: 2ce5ac197763fe9928a20de25072f223513ce59b5daacb866328b8b31e1e0688
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to compromised CMS upload storage and disposable hosting, a common tactic for phishing and malware distribution. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a method to evade gateway scanning. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://mimpiindah168.com/contents/files/98963677713.pdf In PDF document text
    • http://whkmradio.com/userfiles/file/debakubulegadafogufomoge.pdfIn PDF document text
    • http://fedime.org/imagenes/sopogepoxifanazipexibeva.pdfIn PDF document text
    • https://luminex.pl/upload/file/8229879102.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/1ck8sf1eg2oml7nfm83lonj1r9/sajusawu.pdfIn PDF document text
    • http://dekogard.net/deko/veri/_files/48951863972.pdfIn PDF document text
    • http://ballmillfactory.com/d/files/monovijigifel.pdfIn PDF document text
    • http://shannonlakeestates.org/fck_images/file/25070470978.pdfIn PDF document text
    • http://patrick-vallot.com/upload/files/96291072827.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/ruvedefotekomus.pdfIn PDF document text
    • https://resulgame.com/calisma2/files/uploads/62349705961.pdfIn PDF document text
    • https://ciela13.leaddeehub.com/userfiles/files/99470895380.pdfIn PDF document text
    • http://dajuicebarus.com/uploads/files/74120441676.pdfIn PDF document text
    • http://kientrucphatloc.com/upload/files/29687120163.pdfIn PDF document text
    • http://eiak.org/upload/editor/files/wekiripe.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/161356eaa8cce9---49053230762.pdfIn PDF document text
    • https://granitnet.hu/editor_up/jafotorarefapodelom.pdfIn PDF document text
    • https://dom-titan.rs/files/foliladufopokazodif.pdfIn PDF document text
    • http://gniortho.com/files/Upload/file/65351773572.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/rapesajutarorevixom.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee55a570ab---sajataze.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/62634718779.pdfIn PDF document text
    • http://buyo-g.net/userfiles/file/6551408887.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=ver+mitele+en+androidPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e725.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE725 17940 bytes
SHA-256: c14ed5ffa6bb8d80268bb1b8a34531a1a2608391ba967f4dc652e58d695ad994
font_02_sfnt_off00011492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11492 10208 bytes
SHA-256: 7f648138f9fe3b427bc4c0875ceef52f249a27e7db7acc5d9efb8ade1009a1ef

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