Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de25877a66e581d…

MALICIOUS

PDF

88.3 KB Created: 2020-12-10 05:38:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ed09dd2932f367442cb8c169f7cfe341 SHA-1: 90bc2d0cac31cd68abf781aae37f5a4bb6896191 SHA-256: 8de25877a66e581dd104c1a3d5489260a2bb92f6febfac755d5a1bdfe938edcd
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 0.9996

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://traffset.ru/aws?utm_term=types+of+bjt+biasing+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458428/normal_5fa4515d86738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5f93f1693ac74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405903/normal_5f9a5fb528130.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/1b0886eb-7447-4dc9-8e76-5b001054f0ef/1974_vw_beetle_repair_manual_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd93d411-6fa7-4c5f-ac1f-dfe4575d23a2/watch_the_amazing_spider_man_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf6dd975-9e32-42ea-8e50-b14ebb9058bc/jabugilisuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb70307d-54b0-4d5c-a28e-79fa3b4f352a/drum_transcriptions_collection.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5973bc6229360eccccca1/t/5fcaa2c374cefc4aeec7c538/1607115460223/57888020176.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0eca2be9b6939510ae43f/t/5fcd40d4f94b6402b226eb17/1607286996457/toca_lab_elements_how_to_play.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82533e39-48de-4a6a-a171-fe8fb6ca2a29/morumunatavaxu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc009dd8787e87989674e7e/t/5fcadb4766ddd570b0e91bdc/1607129928392/67061044212.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf45d1af5bf52c3269236/1606218847871/ryobi_miter_saw_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/92771716252.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27abee9fc3622d52c1c80/t/5fcfc2ca2e131577b8dd6fb7/1607451339223/arcade_cabinet_build.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1b7b1fb-3303-4681-8185-af19780aa0ec/17628144289.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52A 5348 bytes
SHA-256: 0d88ea5099610de296ea9e15227783b265045a01a06e4ef3d8e53a368b6efd82
font_01_sfnt_off0001073a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1073A 6300 bytes
SHA-256: 6ba9c028658465bbd0646dcf304a0e2c6e9c8ddd62f3ae8a3c7957fb7a696395
font_02_sfnt_off00011693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11693 11540 bytes
SHA-256: 780f484eba6390886a338810c95a351a837875498c584d44967eb096bde2b077
font_03_sfnt_off00013e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E06 16144 bytes
SHA-256: ca609551e8c1adce97efea93fea2ea8c5524c55bd0fbc0bfbed6b8e62228f75d

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