Malicious PDF — malware analysis report

Static analysis result for SHA-256 9968055cde00b95c…

MALICIOUS

PDF

73.5 KB Created: 2021-03-01 14:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 4e39d2dad1c2c1e2ce7f15905cbe8997 SHA-1: 22e9248e195ece456451b891a6b400dc0395ef8b SHA-256: 9968055cde00b95c4d7597390336f73380935f980f39c61de451551a5749520c
212 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate a PDF link farm and a critical ClamAV detection for a phishing trojan. While no scripts were extracted, the structure and link distribution strongly suggest a phishing or SEO manipulation campaign designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 4

  • 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.
  • 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://crophysi.ru/award?keyword=put+the+steps+of+mitosis+in+order In PDF document text
    • https://lebotowim.weebly.com/uploads/1/3/1/4/131438344/jazuwazuxiwib.pdfIn PDF document text
    • https://notaxivarem.weebly.com/uploads/1/3/4/6/134633458/firurulom_gusabuwibo.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/jio_mobile_video_calling_baat_karne_wala_apps.pdfIn PDF document text
    • https://talogaxuzule.weebly.com/uploads/1/3/4/5/134596774/bubebifiwigazazet.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/hf5y6Lg/bike_games_free_download_for_pc_softonic.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/bhe4cif/castaway_cay_weather_in_december.pdfIn PDF document text
    • https://vogapixafaroge.weebly.com/uploads/1/3/4/2/134234717/a93cef01988.pdfIn PDF document text
    • https://pemifapizu.weebly.com/uploads/1/3/0/7/130776061/6c06e.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/fhfehbh/within_temptation_entertain_you.pdfIn PDF document text
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/5594458.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/suxabamizaro.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/mipizaju/13151168511.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/full_metal_jacket_monologue_script.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/fovakopepibiwodexipazu.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/electrical_supervisor_job_description.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/organizacion_empresa_comercial.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/fowatadabek.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/drupal_8_ajax_form_validation_example.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_off000108a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A5 4924 bytes
SHA-256: 29667a6d69aa102504f5190f0a6ceb5a8a330d458d95ae90c5c8cfe9244b8df1

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