Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e1c439af8fb3273…

MALICIOUS

PDF

78.3 KB Created: 2021-03-27 19:41:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12e8e17533f35871ad71bade7fa63552 SHA-1: 572ce845ce780e6c48108a364825468af4d9fa7c SHA-256: 0e1c439af8fb32732738846e670ac40950217a80185c406387fefad8a752d2c4
156 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a link farm, with a primary URL pointing to a suspicious domain related to 'whatsapp plus mod apk'. This suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=whatsapp+plus+mod+apk+v6+40
    • http://wedevaz.sportsontheweb.net/biopsicologia_pinel.pdf
    • https://zikotidule.weebly.com/uploads/1/3/4/6/134604350/6334125.pdf
    • https://cdn.sqhk.co/pabelemusib/eib5d7b/jemimu.pdf
    • http://jomikifu.medianewsonline.com/28126575136.pdf
    • https://xikubafol.weebly.com/uploads/1/3/4/6/134607040/9803319.pdf
    • http://larokamexi.sportsontheweb.net/scissor_cutting_practice.pdf
    • https://cdn.sqhk.co/viwitukaz/gjdP5ck/buwenadufaweba.pdf
    • http://pelinebaj.mypressonline.com/past_simple_past_continuous_exercises_with_answers.pdf
    • https://cdn.sqhk.co/bemapebe/gCjg4ia/sisipomozo.pdf
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/84c5c79ece.pdf
    • https://cdn.sqhk.co/fikalibumi/pM4oSBF/chitralekha_gujarati.pdf
    • https://cdn.sqhk.co/rivinodati/jCPhfhf/lancer_theme_deltarune_sheet_music.pdf
    • http://lelekelosutov.getenjoyment.net/33951396727.pdf
    • https://sopudediliwaweg.weebly.com/uploads/1/3/4/5/134587721/13082ce66699e.pdf
    • http://kubosikavudux.mygamesonline.org/miwinabitojajaliwejufi.pdf
    • https://xutonipojoneri.weebly.com/uploads/1/3/4/6/134667901/xemakekajegeb_wasawewe_semavodo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://1ec9b6e7-17eb-4e1e-a994-ba5ce4cbdb7c.filesusr.com/ugd/d4a9d6_1727b69305754879b3b04b89465571a8.pdf?index=true
    • http://pavabiza.atwebpages.com/dezameje.pdf
    • http://zonatitusajobo.onlinewebshop.net/coldplay_yellow_piano_sheet_music_free.pdf
    • http://wugujub.onlinewebshop.net/moultrie_mcg-13034_manual.pdf
    • https://4192d618-ecd7-4808-8485-efd4d6773ded.filesusr.com/ugd/17a5db_3e8b37cf77d84d23b51ee869af22788b.pdf?index=true
    • 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_off0000f364.bin
01cad2e78b22cbe75f9627f9613f4cf23634e3e6f9744cab94e275d7caf0c5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF364 5624 bytes
font_01_sfnt_off00010670.bin
ed51c8577c2cc409397cbabd69260fab27a3a4e044aaf227ba84248535d3ffdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10670 10900 bytes

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