Malicious PDF — malware analysis report

Static analysis result for SHA-256 eee941b9018d5b2f…

MALICIOUS

PDF

75.3 KB Created: 2020-12-11 20:21:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ba10414f58542aeb6984820b8a241ea9 SHA-1: b90ced34f35ab9b64c1ffb9d6451711004b29e84 SHA-256: eee941b9018d5b2fb1fd1e23c72e0417b1e79b5582e46430b747981dd883ac37
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirection and a link farm, including a critical finding for a known malicious redirector. The ML classifier also strongly flagged the sample as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/123?utm_term=series+llc+operating+agreement+template+illinois In PDF document text
    • https://pomawuro.weebly.com/uploads/1/3/4/3/134368023/kuzevuvar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_5f874277af314.pdfIn PDF document text
    • https://dikabapor.weebly.com/uploads/1/3/4/6/134620412/fapanupegope.pdfIn PDF document text
    • https://joverukaded.weebly.com/uploads/1/3/4/4/134433057/d22f839c13d9fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476930/normal_5faa3ba17b61f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/falufusu/yasuo_aram_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b109405d5340f34a7138/t/5fcf704857846c5b83570012/1607430217149/all_weapon_mastery_challenges_modern_warfare.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b6c78787e8798971b212/t/5fc5a968fa04221c71e37d6b/1606789480918/rukepipi.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/marketing_consultant_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/ridaxeribozemabawemiwe.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/22582954442.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/66235668739.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5307916f6d44b07da8be2/t/5fcd76792fa8bc6bcdff1899/1607300729719/lafosexinozorem.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE0 5144 bytes
SHA-256: ec4b0ead6a55dae0a9a72b0339cbfb42452d802f7eac431f756af15acfc9102c
font_01_sfnt_off0000ee35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE35 10536 bytes
SHA-256: 25a7567292dcc21c194abd97f4adfb028ea4c44cbe2c6c16f10f6c76a0e06996
font_02_sfnt_off00011239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11239 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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