Malicious PDF — malware analysis report

Static analysis result for SHA-256 30dccb3c09199dae…

MALICIOUS

PDF

58.4 KB Created: 2020-12-18 23:52:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8b536b840fb48fe84d24e58093e7c1a0 SHA-1: aa2676c5b79f74a96aaa85ef1425c97fd6ffa125 SHA-256: 30dccb3c09199dae7750ebfd2b44d983904a6562d059e048acdbd9757a0ba47a
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains embedded links that redirect to known malicious infrastructure, specifically identified as a redirector. It also exhibits characteristics of a PDF link farm, with numerous external links, one of which points to a potentially malicious URL. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8144

Heuristics 4

  • 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.
  • 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/aws?utm_term=food+diary+template+free In PDF document text
    • https://zeposonuvijuz.weebly.com/uploads/1/3/4/7/134702940/507d969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415946/normal_5fa82e4a8fd66.pdfIn PDF document text
    • https://suranetu.weebly.com/uploads/1/3/4/4/134458043/cc0c2837.pdfIn PDF document text
    • https://tijabitosivu.weebly.com/uploads/1/3/4/3/134396728/pibebekikav.pdfIn PDF document text
    • https://letitunonagafi.weebly.com/uploads/1/3/4/4/134494227/3440429.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/xixonu/wuwekawugepomimo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2886e92c50b1a1e81da22/t/5fc486a64f98375720704038/1606715047062/wimokis.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/97450872738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f066bd91-ac04-4ab7-b0c5-1c53c217b94d/king_of_avalon_troop_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/archicad_14_free_full_version.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf5653c6ccf69f3240226/1606284652633/general_electric_radio_schematics.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/95585863711.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD048 5068 bytes
SHA-256: d6809ef73c90206bb4125270efb42b6fe2aa2c623775e1065ea0960fcef7afb2

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