Malicious PDF — malware analysis report

Static analysis result for SHA-256 995a28c1b8a625f9…

MALICIOUS

PDF

86.5 KB Created: 2020-11-20 15:13:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a401345503e0debc1b3afe95aa94764a SHA-1: 15bdd26d17d5c01de9a2fd2faac95f408e013b04 SHA-256: 995a28c1b8a625f95aa75e8b325980484c471914d293db744f7d1a5a583bcb71
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that appears to be the primary lure, disguised as a game manual. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious URI.

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://trafffi.ru/strik?utm_term=diddy+kong+racing+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef3708a6-3f0c-410f-b2ef-a97344b55073/35893297734.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/tratamiento_brote_esclerosis_multiple.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb093570-3533-4fc4-8c1e-a0b121259688/9296332018.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/double_indemnity_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94622ddb-9640-4f2a-bf73-a036ae1e7aba/juniper_jncia_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84a87cc2-07bc-4580-b137-b6ebca618bfe/40083816358.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9045203c-604c-48dd-aead-1b9ecfdeb324/tofapalawejineloxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65df1420-6dfc-4a7a-b2f4-576c6899cab5/free_apex_coins_ps4_no_human_verification.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86aa863a-b2be-455c-b326-d747e05bcfe4/28796693400.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acbc3f33-3199-4412-b665-f648d0f218bf/dafatajusegoguvakoraguxir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea76d11-6756-4ed9-a414-b03cf4eebcfe/intermediate_accounting_16th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c475c89-f4a9-4ab4-94a2-dac815b6d565/gavidokigezun.pdfIn PDF document text
    • https://s3.amazonaws.com/muvarelo/abdomen_anatomy_mcqs_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7678d6f4-f83f-4819-8b63-a55ad25e8740/26915092516.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/424ca531-b9ee-4127-a32c-c73783e9c92d/40432894006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cbb3f6a-a4a6-44cd-9172-13868c7200ea/reflected_appraisal_definition.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_off0001172b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1172B 5244 bytes
SHA-256: 89aef9315956a866e7699f8de0938935cbe43e4c4e4ffd1c56343be2ccb375f1
font_01_sfnt_off00012903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12903 10460 bytes
SHA-256: b40f8dbeed4013ae2926cf185efb4da96327df864ef97b0789a498b599f6416c

Open this report in the interactive analyzer, or submit your own file for analysis.