Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fba2fe047d6510…

MALICIOUS

PDF

73.9 KB Created: 2021-02-14 20:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 8172174ebaa3060772df0fbd3d47f5fa SHA-1: 6fc43afa776fdf89179eb2a39bd20ce6c8cc8bfa SHA-256: e7fba2fe047d6510a1cdb10b2feba8ccab3caebaa0d0a6c60458bbc630c35c94
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 phishing or trojan payload. It contains an external URI pointing to a suspicious domain, likely intended to host malicious content or redirect the user. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it may leverage embedded JavaScript for malicious actions, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/123?utm_term=us+naval+sea+cadets+officer+uniforms PDF link annotation
    • http://idealsit.space/femevixuwutazijozitudqzlg.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/eChfHib/86471590209.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/ghfjaLn/kitunidizudif.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/giQhhgf/moto_traffic_race_2_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/Xhbieii/30794087963.pdfIn PDF document text
    • https://cdn.sqhk.co/lakekomum/1QHjNmc/2021_movies_box_office_predictions.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367940/normal_5fcaa97fae666.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/ddgg2jc/toy_smash_cake.pdfIn PDF document text
    • https://cdn.sqhk.co/wibezudak/NgjjajS/25553587792.pdfIn PDF document text
    • http://vezerfa.xyz/business_plan_powerpoint_template_microsoftjt7fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503390/normal_5febc2cb3439e.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/gwJOiib/poshfest_2020_youtube.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zijivevip/19969099837.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/tenusokazitotixud.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/access_vba_cdate_format_dd_mm_yyyy.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/24913558241.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/army_code_of_conduct_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/birla_mutual_fund_swp_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD712 5100 bytes
SHA-256: a9e939f1121899400ccaf0f1de7aa50dfdf3bf9661e1ea665b00d1244fa30a47
font_01_sfnt_off0000e855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE855 10512 bytes
SHA-256: 8601c39f5fb84e78c8366ab5a631b56341a4a544ef731523ec866e4344672ef9
font_02_sfnt_off00010c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C4F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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