Malicious PDF — malware analysis report

Static analysis result for SHA-256 26aa030d0c675582…

MALICIOUS

PDF

73.1 KB Created: 2021-09-10 10:50:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 1b472bcbb832fc41be4fc54a7ec13bfc SHA-1: 8f850af5f9ac698496fb2824b875ceb159ea0c38 SHA-256: 26aa030d0c6755820e1189d85af062c8bcb052fab024614150039f5fe979b12e
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://garglob.ru/uplcv?utm_term=gm+diet+plan+in+tamil+pdf PDF link annotation
    • https://tucarrorentacar.co/ckfinder/userfiles/files/davad.pdfIn PDF document text
    • http://www.kevimotor-rock.hu/files/files/73233113305.pdfIn PDF document text
    • https://by-express.com/upfiles/editor/files/96161418567.pdfIn PDF document text
    • http://xenangheli.vn/public/files/gibatiwitulazakedefawaw.pdfIn PDF document text
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/a5ad39b7d9fbd85555dc71366dce4e45/87869903254.pdfIn PDF document text
    • https://fier-forjat-valimet.ro/ckfinder/userfiles/files/33210950597.pdfIn PDF document text
    • https://bomando.bomsolar.com/uploadfiles/files/pagerolazowi.pdfIn PDF document text
    • http://nanoscopy.ru/uploads/files/zefogelunigex.pdfIn PDF document text
    • http://thepokeluau.com/uploads/files/bonulagibigazo.pdfIn PDF document text
    • http://debnine.net/UserFiles/File/sikovetizijurebivozel.pdfIn PDF document text
    • http://lamorenj.com/userfiles/file/78890199723.pdfIn PDF document text
    • https://m-astar.com/UserFiles/files/53549595969.pdfIn PDF document text
    • http://gabortech.com/admin/file/jebavipagerimelagenerejuv.pdfIn PDF document text
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/95337420456.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/mekikapefekax.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/72273200064.pdfIn PDF document text
    • https://investir-petroleo.pt/ckfinder/userfiles/files/fenudizageti.pdfIn PDF document text
    • http://scales-center.com/shop/fck_file/file/31558994496.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/91889672672.pdfIn PDF document text
    • https://jss-moms.si/upload/File/gadadevotofulaxubevij.pdfIn PDF document text
    • http://jjkxmy.com/upload/files/202109070414411156.pdfIn PDF document text
    • https://ddmmaze.altruistictech.org/documents/img/upload/files/33738655639.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16131b38bc9b9e---zitagewejepemij.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_off0000bc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC32 16836 bytes
SHA-256: 813b23f5630f7e2f2469bdfc8f32d9487068b1fdbef69877c1677b510481992a
font_01_sfnt_off0000e7e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 10308 bytes
SHA-256: c3e24334c659264a86c5baddc5e3126083f32605314e973496bd6a5dfaadf1fe
font_02_sfnt_off0000ff15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF15 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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