Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2456767527c073…

MALICIOUS

PDF

119.6 KB Created: 2021-03-20 09:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8940a6e8e2bf6b23a73c1bcf0c7bfef3 SHA-1: b0cfacce8434ae8397698ddf293f53febfbcf255 SHA-256: 5e2456767527c073cd541413b1ec38db20365b4f855059b70c44790b208bee98
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or to serve a malicious payload. The document body, though heavily obfuscated, contains strings that suggest a lure related to a song title, indicating a social engineering attempt.

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://botokaw.ru/award?keyword=before+he+cheats+piano+pdf
    • https://static.s123-cdn-static.com/uploads/4416140/normal_5ffd63a382634.pdf
    • https://fijudemi.weebly.com/uploads/1/3/4/4/134400988/zitimumojonagoferot.pdf
    • https://cdn.sqhk.co/sirejeforox/ftgdKhg/forensics_files_worksheet.pdf
    • http://ligexekena.mywebcommunity.org/gusajovugoxot.pdf
    • https://cdn.sqhk.co/tezofugowura/ghfhjK3/21646054753.pdf
    • https://cdn-cms.f-static.net/uploads/4392877/normal_601ac4cea5c33.pdf
    • https://cdn-cms.f-static.net/uploads/4407303/normal_5fe649044dc6a.pdf
    • https://zoguripan.weebly.com/uploads/1/3/1/0/131070442/wifejifax.pdf
    • http://xejepurefe.scienceontheweb.net/aghori_mantra_book.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_6079e664c8684e3d8a86cf938bb7b163.pdf?index=true
    • http://telusomabufa.onlinewebshop.net/will_ahsoka_tano_be_in_episode_9.pdf
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_5c528af33b484a44b240a584e126ab4f.pdf?index=true
    • https://s3.amazonaws.com/gonafoziguwewe/dark_blue_winter_formal_dresses.pdf
    • https://s3.amazonaws.com/muxegeza/what_is_canvassing_application_form.pdf
    • https://cb0508fd-2a1f-4901-a161-a76823ee8e4f.filesusr.com/ugd/52013e_4d50261a023647f8b669ea1def48a9d3.pdf?index=true
    • https://334e481f-4595-4613-8514-cf1b68b0f675.filesusr.com/ugd/a5bb32_54b64cc5dfd74597af72bbb42ecfc6f4.pdf?index=true
    • https://s3.amazonaws.com/lovomijelun/astronauts_names_and_information.pdf
    • https://s3.amazonaws.com/tinezedu/mofadu.pdf
    • 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_off000198c5.bin
c1f15c4eecb6ec964da3aa91f7117f9eb8bdb4f8e6bf431f6a2d23bd0c16878a
pdf-font-stream PDF embedded font (sfnt) at offset 0x198C5 5260 bytes
font_01_sfnt_off0001aaa7.bin
7b7d0b75c47cb08bf0f2ca30cfdec330d1676bf96ff085a5983fd62d8aabc6c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x1AAA7 10704 bytes