Malicious PDF — malware analysis report

Static analysis result for SHA-256 216b5972abbb56cf…

MALICIOUS

PDF

180.3 KB Created: 2021-03-24 22:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc9e26fbd7e8006908c9f664a92e706c SHA-1: 9e1c5fafb9c7f04b5d42477432c132b6ed4f05d2 SHA-256: 216b5972abbb56cf872c2ca107fcab84fffa118a539fd6d68753eb006e1478dd
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://nipisod.ru/wix?keyword=wells+elementary+school+rating PDF link annotation
    • http://pililiriniru.mypressonline.com/algorithms_in_c_part_5_graph_algorithms.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426085/normal_5ff6353d8bc9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529780/normal_5ff54910ce316.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457861/normal_5ff8ba3432cc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463532/normal_5fd12a9b0e51a.pdfIn PDF document text
    • http://kuviruvada.getenjoyment.net/14115208766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389821/normal_60205fd96736f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5ff8fbd60faba.pdfIn PDF document text
    • http://dosefokinuvulo.mypressonline.com/46680323608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393180/normal_5fc6b34a9189a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_6054dff3e7a72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444104/normal_5fec7dc2d28b0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368955/normal_5fca5ccae74d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b6d14f7-1182-4dff-a130-b985dab27f6c/william_gurnall_the_christian_in_complete_armour.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a7e7b1c-84c1-4a16-b2a3-e898b5275b67/device_electronics_for_integrated_circuits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3e3b5b-62d7-48da-8a09-c7b9654c58ce/46776010564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c671e36-e644-4605-8e98-726b616ad304/what_is_the_meaning_of_commerce_and_trade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0911c22-bef3-4f63-a46d-b38161b21896/sibagir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c4aa38-580c-48d3-b923-a3e7f94a8c71/bituxufab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/255c36f7-0b39-4d93-a365-fb635ead2620/how_to_clean_the_intex_saltwater_chlorinator_cell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c0a6c9-2073-4113-be69-1ca22dae2f47/rawepibimoxolorobude.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00649979-2a75-4d3b-a29a-c8913cd62c86/inverse_trigonometric_functions_derivatives_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d28c705-0958-464b-9924-f9885124eba9/ampli_guitare_fender_mustang_i_v2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c44699e0-d149-4fb9-9607-f31baadc86ad/31967887886.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_off00028aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28AA5 5328 bytes
SHA-256: 2d4998ddcbd20494c39fe0575af89d5889afc44af811e1e1046ad015c27303f4
font_01_sfnt_off00029ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29CA8 11340 bytes
SHA-256: e10df183ccc9fcffb23cfd5fc328f10ff2625054efb0b75928cb6082217fd7f3

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