Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed3d80ea5a01ec9…

MALICIOUS

PDF

81.9 KB Created: 2021-03-28 14:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bb6d60de8bb7e9714c5f739f029dda57 SHA-1: dff0392cb7f7772ee0d3f092bcc0134c808443b6 SHA-256: 7ed3d80ea5a01ec9c16ebd34981c05a32634b1a4d2d71f1d1e218ccae966bc7c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/123?utm_term=neonatal+hyperbilirubinemia+guidelines+aap PDF link annotation
    • http://wildboost.club/ludevemilaluwujibipudunitp4k.pdfIn PDF document text
    • http://aycotoro6.xyz/muwenokokowowa0fwv.pdfIn PDF document text
    • http://idealslimitaly-ufficiale.site/how_to_2d_animate_with_blendervknni.pdfIn PDF document text
    • http://chatik85939775.fun/53177702805i9kd0.pdfIn PDF document text
    • http://miraluvofizobe.medianewsonline.com/mipolurinetuzikejemafufol.pdfIn PDF document text
    • http://heartcenteredequestrian.com/pomalemagutezujiwuzikwswnu.pdfIn PDF document text
    • http://mebelrostov.ru/adventure_capitalist_support_codesl91l8.pdfIn PDF document text
    • http://wordwild-store.com/manual_assentamento_funcional_digital37tsw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/54622510712.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/87149105161.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/entry_level_electrical_engineering_jobs_in_indiana.pdfIn PDF document text
    • http://pofijiserige.onlinewebshop.net/revuxodibogume.pdfIn PDF document text
    • https://4cf6c2b4-cd84-4b73-83b1-bf7f441162b2.filesusr.com/ugd/e50c99_b14bc423d03f483192ee4df705d28c4b.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_84f0992e1d2d4ec4bd9afe09ba4941f6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/rimivadorotolov.pdfIn PDF document text
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_1595a9ffbf434a23a817ed405429d0fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/is_the_disease_in_geralds_game_real.pdfIn PDF document text
    • https://46ebecaa-9490-439b-bba6-ee77f1a6ca93.filesusr.com/ugd/cee8a1_f9e18b5640d14623886e5380f60b941e.pdf?index=trueIn 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://scripts.sil.org/OFLIn 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_off0000eea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA3 5584 bytes
SHA-256: 42549ed3c79701deba5e16f49f8c0a6be00db913996c855d8cdf04f83b542c5b
font_01_sfnt_off0001017a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017A 10400 bytes
SHA-256: 140135583335492d08ff12221ae7dd856802bd30a6d81c32bc74be9c278829de
font_02_sfnt_off00012541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12541 16092 bytes
SHA-256: 9dafc8c6c2044359462da21d531ebddb9f9aebee88f97414d95c5c82fe20cea5

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