Malicious PDF — malware analysis report

Static analysis result for SHA-256 e136f4b09b8783d2…

MALICIOUS

PDF

79.4 KB Created: 2021-03-31 17:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee6d29bace1470e444c7eb8cc672f28a SHA-1: 789a322a9097229da66a96fc3929029252f1969e SHA-256: e136f4b09b8783d2bffaa1b45046f94476d0db41d87a7b29066856ae3e3f04c8
96 Risk Score

Malware Insights

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

The file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a domain associated with phishing, suggesting the document's purpose is to redirect users to a malicious site. No scripts were extracted, but the PDF structure itself contains the malicious URL.

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://vilenefex.ru/wix?keyword=personal+nursing+philosophy+paper+examples
    • http://mebets.xyz/electrical_and_electronics_engineering_books_downloadimp99.pdf
    • http://hr-insider.com/hitachi_led_tv_reviews_indiaxnmvf.pdf
    • https://vozunekoba.weebly.com/uploads/1/3/4/9/134902797/54ff256e1d49a6.pdf
    • https://fonevufaj.weebly.com/uploads/1/3/4/4/134444269/kevidoj.pdf
    • http://remont-pc.website/beretta_a300_outlander_camo_barrelq5xhj.pdf
    • http://jsexj.fun/how_to_influence_without_direct_authority6q64y.pdf
    • http://prostochillforum.fun/78468400932rudlw.pdf
    • https://gevoxegugajaber.weebly.com/uploads/1/3/4/6/134668378/9273971.pdf
    • http://nickned.me/python_data_analysis_training_londonah5wh.pdf
    • http://b0xberry.online/bcom_1st_year_books_in_marathivu6jf.pdf
    • http://emmetrix.net/amoeba_sisters_enzymes_answersrfa1z.pdf
    • http://rent-nout.site/rijogerijibetnix.pdf
    • http://chategratis.online/alesis_dm10_mkii_pro_vs_roland_td-17kvxn4jz4.pdf
    • http://bachanalytics.com/dazuvewomefiv3s5f.pdf
    • http://arm-watch1.club/galil_parts_for_saleeu29u.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fezitovowikawof.epizy.com/37331881822.pdf
    • https://uploads.strikinglycdn.com/files/70b1e953-dfab-4b79-b843-3d877367a7c4/wonuziw.pdf
    • https://uploads.strikinglycdn.com/files/03d3a0f9-6049-4866-8cc5-e0885764a825/roxefogowivoxewakenoruxor.pdf
    • http://kabadowirapi.epizy.com/chest_workout_plan.pdf
    • https://uploads.strikinglycdn.com/files/5078dcad-b938-4750-b7c9-910f0a14ec08/games_like_nancy_drew_her_interactive.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_off0000fa6d.bin
f73a6a89ef66898c1d219126ff3a8398fae2214888db40169d3fa682cfde530c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6D 5404 bytes
font_01_sfnt_off00010cb3.bin
c14f75342aa6cd7b53f286de010651b6197722d5a9f7604184eb60000072ead4
pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB3 10456 bytes