Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40e978fabc3b362…

MALICIOUS

PDF

64.6 KB Created: 2021-02-12 04:15:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7ba8bb7c306d36f2c8c4f8421f5ccacf SHA-1: 9c62c7d0cad1469607430914a07a56e43999e7c1 SHA-256: a40e978fabc3b3629bc3b5a11c01494cbd57f6633b69c5cf7645b0ed50a3e46d
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7139

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/wb?keyword=ayushman%20bharat%20yojana%20scheme%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4461205/normal_5fddabb963825.pdfIn PDF document text
    • https://cdn.sqhk.co/jerizukop/slNgLjj/cover_up_orange_hair.pdfIn PDF document text
    • https://gogabaxada.weebly.com/uploads/1/3/4/8/134852864/3153073.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426955/normal_5ff52b73764ba.pdfIn PDF document text
    • https://tulalesin.weebly.com/uploads/1/3/4/8/134876190/933ed25.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/4fe76a4d4.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/gpPvcMB/the_check_cashing_store.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/ridudakarovu-lusawupejilinil-tosas-xitatufemizepir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_60184b2dc3026.pdfIn PDF document text
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/jizosanez.pdfIn PDF document text
    • https://palujaburufo.weebly.com/uploads/1/3/2/7/132740236/3189921.pdfIn PDF document text
    • https://bovikobugekut.weebly.com/uploads/1/3/0/7/130775803/d6f1f30343969.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/cjagfC7/55686513878.pdfIn PDF document text
    • http://subefimajifulik.22web.org/80602013859.pdfIn PDF document text
    • https://gavurefeg.weebly.com/uploads/1/3/1/0/131070452/tapanabad_votovot_kutefosawadus_norakudawinam.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/lGgihdo/cat_mouse_app_iphone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500665/normal_5fcf34f58d2be.pdfIn PDF document text
    • https://wodosokereso.weebly.com/uploads/1/3/1/4/131407547/molawajap_noribaga_raboxol_zurul.pdfIn PDF document text
    • https://fogurasetaj.weebly.com/uploads/1/3/5/9/135961985/xozadujarega.pdfIn PDF document text

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