Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb0e812a083bb0ca…

MALICIOUS

PDF

71.9 KB Created: 2021-03-28 20:22:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1f20403b35135ee458a94122689af7d5 SHA-1: 72ee1b5ce024489c66f2246fb128584e09ed809d SHA-256: cb0e812a083bb0ca51d2e74408059619a3e41f747adf1c9897e652b10473c2e7
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of numerous external URLs, including one pointing to `maypoin.ru`, suggests the PDF is designed to redirect users to malicious sites for further exploitation or phishing. The document body, though heavily obfuscated, contains text related to 'Imagine Dragons Thunder lyrics PDF' and the authoring application 'wkhtmltopdf', indicating a lure to disguise the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/award?keyword=imagine+dragons+thunder+lyrics+pdf
    • http://beririka.scienceontheweb.net/badavo.pdf
    • http://9gusevshop.space/23954057590vyb3d.pdf
    • https://lalotuzeguraja.weebly.com/uploads/1/3/1/3/131383936/lazadelejajoba.pdf
    • http://vobalemujumojak.mywebcommunity.org/carlson_surveyor_2.pdf
    • http://lestyprin.online/mirufekov5blu.pdf
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5fc94d385e086.pdf
    • https://static.s123-cdn-static.com/uploads/4369146/normal_5ff69502c4cf0.pdf
    • https://cdn-cms.f-static.net/uploads/4410976/normal_600b1e9789aa7.pdf
    • https://cdn.sqhk.co/xenudipu/cYVgiAH/zion_national_park_narrows_guided_hikes.pdf
    • https://tejojobowadame.weebly.com/uploads/1/3/0/8/130874570/guzekobaz.pdf
    • http://gasurorir.sportsontheweb.net/bioethics_an_anthology_3rd_edition.pdf
    • https://cdn.sqhk.co/detaludolef/hheCif3/fixogavetujupaxadabuke.pdf
    • https://nuzozixajalupik.weebly.com/uploads/1/3/0/7/130739607/3b5a45a4aa75a.pdf
    • https://cdn.sqhk.co/sawibevas/wBifus9/zombie_invasion_escape_walkthrough.pdf
    • http://moitender.org/pipovulrcdml.pdf
    • https://sagelaxun.weebly.com/uploads/1/3/4/5/134594749/8458903c178af4f.pdf
    • http://tuwasukam.getenjoyment.net/75682175312.pdf
    • https://cdn-cms.f-static.net/uploads/4483365/normal_605cb25eac145.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_42963ae531af42a6a90ad7c2a2779aec.pdf?index=true
    • https://c1bbde11-5cda-4f7c-8b74-b2fe90b484f5.filesusr.com/ugd/1c8c6c_e7282c718d5f4cbca4a5b514a7ddfc22.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb8.bin
dcc7b2326039f38a1cb6379157892e68a59d0470f50a4a54b98400cc5ac2bfe5
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB8 5608 bytes
font_01_sfnt_off0000efad.bin
bb52b893ea84c3761fc5eeafb8ee7226073e49e8dca64a38fc9a34b115e3b88e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAD 10060 bytes