Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ce455179f614f2…

MALICIOUS

PDF

86.4 KB Created: 2021-03-10 16:19:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 31336a3ddc1ecec709272e0f99fcd01c SHA-1: c9e36dc72bdfbd41a483ca2b13e719bfe73e958d SHA-256: 25ce455179f614f22bb2273dc55e6ccaf4541dca65295e0d5703bfd6462eab56
176 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The presence of a large number of external links, many pointing to PDF files, suggests a link farm or phishing attempt. The 'SE_CALLBACK_LURE' heuristic further supports a phishing or scam pretext. While no scripts were explicitly extracted, the PDF structure and heuristics strongly suggest it's designed to redirect users to malicious sites.

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://midufefew.ru/award?keyword=zelda+ocarina+of+time+game+guide+pdf PDF link annotation
    • http://tebapewulodafe.getenjoyment.net/jivubidokudiwosug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479254/normal_5fc8741fd0250.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421218/normal_5fe61b01c670f.pdfIn PDF document text
    • https://mubisajapesufu.weebly.com/uploads/1/3/4/6/134620746/zosokewubimigal.pdfIn PDF document text
    • http://talajifit.mywebcommunity.org/xupojiduxemezoda.pdfIn PDF document text
    • http://zereteleriw.getenjoyment.net/xcode_storyboard_tutorial_for_beginners.pdfIn PDF document text
    • http://riwozizedilar.mygamesonline.org/sopebizo.pdfIn PDF document text
    • http://ninuxalezopo.getenjoyment.net/jirobidogisasebilezekab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_600cfb12c4b93.pdfIn PDF document text
    • http://nigodofifulo.scienceontheweb.net/vadugavapexejapoxu.pdfIn PDF document text
    • http://kidiwutimako.mygamesonline.org/97043196751.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/pebexoxafaxikagab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428083/normal_5fee2f7249cf2.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/cbca631b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476927/normal_600d499dda9e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuvuzevo.atwebpages.com/physiology_costanzo_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/james_allen_mccune_age.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/android_emulator_mit_app_inventor.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/gujazopi.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/percy_jackson_and_the_titans_curse_graphic_novel_read_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/appendiceal_phlegmon.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11327 5252 bytes
SHA-256: d72fee4209eeb061a6567db354deaba2754ceb7b0a6dc109d746600bde617a4f
font_01_sfnt_off000124f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F5 11640 bytes
SHA-256: 61d573e57195cb29a6d8967ecdec79a8559dc10ef1be3c56c5c22712464cd0e5

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