Malicious PDF — malware analysis report

Static analysis result for SHA-256 246f004d8937d9d4…

MALICIOUS

PDF

67.4 KB Created: 2021-03-27 11:58:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e2fb55185ed01d4be5e1101a52da59f SHA-1: 5c35e4a2e6340b424ca4f6cb27ee8af14cab1a54 SHA-256: 246f004d8937d9d40de9c56de925ae1366d7eca5039f7fc525728139aafef03b
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly to Weebly-hosted PDFs, suggests an attempt to manipulate search engine results or redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or SEO-based malicious campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=eastside+center+east+peoria+il
    • https://damafofazawarag.weebly.com/uploads/1/3/4/3/134369947/5440577.pdf
    • https://tejojobowadame.weebly.com/uploads/1/3/0/8/130874570/5760200.pdf
    • https://cdn-cms.f-static.net/uploads/4392472/normal_605a29fe6f5d3.pdf
    • https://komimuvupelogi.weebly.com/uploads/1/3/4/3/134312664/zemuleb.pdf
    • https://bativizamazon.weebly.com/uploads/1/3/4/7/134770744/e187baabc86a8.pdf
    • https://kujedoduzenawo.weebly.com/uploads/1/3/0/7/130776750/884aa6964e111.pdf
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/jojazuvuxesifu.pdf
    • https://cdn-cms.f-static.net/uploads/4443617/normal_604a7f3719a0a.pdf
    • https://bitigufej.weebly.com/uploads/1/3/5/3/135337089/moxenuxedafo_detiwemokojip.pdf
    • https://zemaxixose.weebly.com/uploads/1/3/4/6/134636511/64e97b7adcf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lixisariwulo/stihl_bg86_carb_adjustment_tool.pdf
    • https://s3.amazonaws.com/wolina/vintage_lawn_boy_push_mower_for_sale.pdf
    • https://s3.amazonaws.com/regegozumekoza/38804873641.pdf
    • https://s3.amazonaws.com/gumegulaxi/how_to_bypass_mega_limit_jer.pdf
    • https://368051e9-4199-40ea-b9a2-dc6e6f83cb3b.filesusr.com/ugd/6260fe_68cf44fe57d447048750b99cfdcaa2ad.pdf?index=true
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_e6009b5c29964095a649075d144e4a81.pdf?index=true
    • https://s3.amazonaws.com/salosibejodod/arsenal_vs_chelsea_match_highlights.pdf
    • https://s3.amazonaws.com/zesotat/medical_certificate_form_for_special_casual_leave.pdf
    • https://s3.amazonaws.com/nakuzafol/bksp_online_admission_form_2018.pdf
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_d2cf09a9c500478485e7cc0d2f06ffd6.pdf?index=true
    • https://s3.amazonaws.com/pewibim/2561443931.pdf
    • https://1fc3e790-19e1-43b7-bae7-d09a953f51fe.filesusr.com/ugd/2c608b_6c25da8fe90a4d20bc6f35d620407b52.pdf?index=true
    • https://s3.amazonaws.com/tetofamuxulil/jnc_8_guidelines_hypertensive_urgency.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd14.bin
e1d215d1fea793df8ea2c551ba73d49e521709f108a78e9ec0ecd387581bde70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD14 5024 bytes
font_01_sfnt_off0000de38.bin
32488a317ca2baa2c871125e49ea2e2d547b6e682107f528466fd18d443cda14		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE38 10180 bytes

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