Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f219eec765c0f89…

MALICIOUS

PDF

76.6 KB Created: 2020-11-24 13:43:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9e95b0a4bb91ff7e7ab268fd8baf1e73 SHA-1: 72e074c17d0b05a72883c3266140f0186a5d4d23 SHA-256: 5f219eec765c0f89256fb4ddcdd4873f1d4d902abd866a399db3f20d53ca8e13
222 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirector infrastructure and a large number of external PDF links, suggesting a link farm. The presence of a 'download button' lure further supports a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and linked URLs point towards a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/123?utm_term=my+hero+academia+deku+wallet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419836/normal_5f9c49cf4121e.pdfIn PDF document text
    • https://juliraviwuziw.weebly.com/uploads/1/3/4/2/134267057/1743498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492593/normal_5fb8e4a2bb730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375698/normal_5f9bcaf3debe4.pdfIn PDF document text
    • https://xiletepegokif.weebly.com/uploads/1/3/4/3/134319576/kogigevaw_wofikunumafiwot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411228/normal_5f93b2a147078.pdfIn PDF document text
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/9582339.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402488/normal_5f93046cabea0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424991/normal_5fa7147fce1d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_5f9bf588608c7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac62a2ff-0403-4590-acfb-138c539f05e3/lufitajegeworisoraduze.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/67814933635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe106e37-a3f5-4471-8228-d0b8fa993754/788207023.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/the_official_sat_study_guide_2016.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
    • 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_off0000d83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83D 5264 bytes
SHA-256: 8d0f668394e8b4a5ad1f9eb9bcaf4a3fa82fdf77134f6903ac668e9d8b3748fd
font_01_sfnt_off0000ea15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 11336 bytes
SHA-256: db8cfdd4faba06319b50b456944882deed721c42ef463db749f16843dcc6ca61
font_02_sfnt_off000110c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C6 16060 bytes
SHA-256: dea42a645509e47913d94a3c1ff2e7ffecf6ca7e8d06e08a5f86f932263db97d

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