Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0808a2d1092f005…

MALICIOUS

PDF

65.5 KB Created: 2020-12-15 07:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5638bdd710f0eda2d3f207ef5bb4e702 SHA-1: ea4019eb9b57e28f22d90c4867f9297f7707b882 SHA-256: a0808a2d1092f0056dbf863de2b06dce504e26073c497dea93e8ba7b8d2a1569
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'https://traffine.ru/123?utm_term=league+of+their+own+costume+baby'. It also exhibits characteristics of a PDF link farm, with numerous external links, including 'https://s3.amazonaws.com/topipovikapari/acute_normovolemic_hemodilution_guidelines.pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/123?utm_term=league+of+their+own+costume+baby In PDF document text
    • https://fozufamegevavup.weebly.com/uploads/1/3/4/5/134586639/5373460.pdfIn PDF document text
    • https://zomujowedava.weebly.com/uploads/1/3/4/6/134629266/suwodase.pdfIn PDF document text
    • https://duxetaxegijojem.weebly.com/uploads/1/3/4/8/134870405/zumowof.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/topipovikapari/acute_normovolemic_hemodilution_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/share_it_app_installing.pdfIn PDF document text
    • https://s3.amazonaws.com/tipakalif/jifikikipajefupoga.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/aptitude_test_practice_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/meiosis_cell_division.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/smooth_4_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ebde259-7fa5-4d02-b840-b65a21e08ee6/52266136138.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/jepowemawagatiwewetepami.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/beviw.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B1 5536 bytes
SHA-256: cefdd9721d8616649f1adbb65c25dc16d2952a59a668eab2180e266957f082fd
font_01_sfnt_off0000d57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD57F 10536 bytes
SHA-256: 82689edb11213c6ad93f756807651c8b2cf996aaeab6b58db70449976006bda7

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