Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc036718669c12d…

MALICIOUS

PDF

69.6 KB Created: 2021-02-27 22:53:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c504e1132f30b62b9b0ab70debed71af SHA-1: 86ae4eafae920a318a31f87985e5c47b94d9d59c SHA-256: edc036718669c12d62a08bc7f1a7c88f7a61213a10e022ed0274d5ecc82c16ba
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to suspicious domains, and a heuristic identified it as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9656

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pelibifir.ru/aws?utm_term=how+long+does+us+domestic+mail+take PDF link annotation
    • https://jitifawe.weebly.com/uploads/1/3/5/3/135327084/fisoridixi.pdfIn PDF document text
    • http://vulufinagi.mypressonline.com/povekupotimoxubav.pdfIn PDF document text
    • http://gedadekenoz.mywebcommunity.org/harbor_breeze_saratoga_48.pdfIn PDF document text
    • https://vumukawa.weebly.com/uploads/1/3/4/6/134662430/5355275.pdfIn PDF document text
    • https://nezopubetuw.weebly.com/uploads/1/3/2/6/132681339/ee1147bed5b74.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/14283033431.pdfIn PDF document text
    • https://gimoxawoja.weebly.com/uploads/1/3/1/3/131380550/bogefitalutike-kurubivifu-fekoto.pdfIn PDF document text
    • https://wosufixojiniki.weebly.com/uploads/1/3/4/7/134720754/6297928.pdfIn PDF document text
    • https://doxugibako.weebly.com/uploads/1/3/0/7/130776338/nupitejupune.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/rubidokezive/4k_wallpaper_for_iphone_x.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/online_project_management_training_programs.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/97741260895.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/oura_ring_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/maithili_shiv_bhajan_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/fbise_improvement_date_sheet_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/2008416027.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/33770778472.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_off0000e78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78C 5164 bytes
SHA-256: 0114f3df4cbdea8c547f950c16481a78dcd417d48a066a702d39ccfe8f98023e

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