Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22fe4b2650ad7aa…

MALICIOUS

PDF

50.6 KB Created: 2021-03-31 08:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 02985a7a4b8175e9785ad763c5fda9b1 SHA-1: 0fee1c9da96845d9b55eeb13446fd04aec813693 SHA-256: d22fe4b2650ad7aa366b17006fd2110ece9d3bb1af0ef22df74d773f477f0a93
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 0.8343

Heuristics 5

  • 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.
  • 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://resalured.ru/aws?utm_term=in+the+gospel+of+wealth+andrew+carnegie+asserted+that PDF link annotation
    • https://romidanunopupef.weebly.com/uploads/1/3/1/1/131163616/d79b6d258b61c.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/furisewofoselixavow.pdfIn PDF document text
    • https://bazitakitavame.weebly.com/uploads/1/3/5/3/135394276/bawufejuruzi.pdfIn PDF document text
    • https://cdn.sqhk.co/sonorizeluwi/HKkqKgf/funimamidonibeve.pdfIn PDF document text
    • https://minetoleletumu.weebly.com/uploads/1/3/4/7/134767865/7098772.pdfIn PDF document text
    • https://potutipuvo.weebly.com/uploads/1/3/4/6/134680823/9075916.pdfIn PDF document text
    • https://buvawaxeve.weebly.com/uploads/1/3/0/8/130874113/0e4a01f2e30.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/jfiWKgj/piruvafovomodijip.pdfIn PDF document text
    • https://cdn.sqhk.co/velijituma/hajfSdW/callaita_lyrics_bad_bunny.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_a5aac17bb68948118d64de5e738394b9.pdf?index=trueIn PDF document text
    • https://601bead5-a720-4f65-98db-62fe2a42cb91.filesusr.com/ugd/0e52b4_e16b0b3dc1d9440aafa5f3302663cf94.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/40778b9f-3a38-4fef-bf2e-dbe74d7271cd/trimble_data_transfer_utility.pdfIn PDF document text
    • https://8d59741e-369e-44be-b01e-8fbcb09d2d01.filesusr.com/ugd/7cefa9_7a8cb337a91c4006bae08d041d32440d.pdf?index=trueIn PDF document text
    • https://677f84e8-2a3b-482a-8721-58d714100356.filesusr.com/ugd/086aec_c0d2b9f888f24961ba44ebd0dce7f046.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29f2226-70ec-42f8-9796-6abc2e8d1cd9/4709398030.pdfIn PDF document text
    • https://cc6d8859-fc08-4100-a073-55b48c5addfc.filesusr.com/ugd/238140_9bfcb1da8b0343668593b60578d139a2.pdf?index=trueIn PDF document text
    • http://segimoto.myartsonline.com/61695989628.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14531b5a-232e-49cb-b56a-92ba0380ff46/41710093900.pdfIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_bb806e6f71394733b2fc6f054f6c719a.pdf?index=trueIn PDF document text
    • https://777dd155-384c-4f1d-a337-8f27b94bb056.filesusr.com/ugd/1ecdae_caa62814d6e24729a07ed85d61437c0e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3276d69f-0360-4f86-ba48-4372b890507b/21838441825.pdfIn PDF document text
    • https://6776ac3f-883f-499f-bc52-38dff818ec46.filesusr.com/ugd/969751_6bb38f0e7b4543ea9c97009a68768c5f.pdf?index=trueIn PDF document text

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