Malicious PDF — malware analysis report

Static analysis result for SHA-256 1854aea2a97d8751…

MALICIOUS

PDF

78.2 KB Created: 2021-02-25 06:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ec38316ff288848c4b132e7ed8178d8f SHA-1: 72327f0b9182fb47fb4c4a80f4fe917d4e785234 SHA-256: 1854aea2a97d87519f051fbf5e317e94b90456718f147f6033059e5eba7e1437
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded text 'Beats studio pairing unsuccessful' is a lure to encourage clicking the malicious link. While no scripts were directly extracted, the PDF structure and the presence of malicious links strongly suggest an attempt to redirect the user to a compromised site for further exploitation.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/award?keyword=beats+studio+pairing+unsuccessful In PDF document text
    • http://blaugrana.ru/minecraft_earth_softonichwgcb.pdfIn PDF document text
    • https://cdn.sqhk.co/sawomunuj/hhuGies/60963802171.pdfIn PDF document text
    • http://bavunexebiri.iblogger.org/year_end_accomplishment_report_in_science.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459625/normal_600e59fd0fefd.pdfIn PDF document text
    • http://jewakololinifi.22web.org/81781941458.pdfIn PDF document text
    • https://cdn.sqhk.co/wupetutigo/eQYijhi/truck_simulator_usa_nintendo_switch_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471971/normal_602169ca1fc41.pdfIn PDF document text
    • http://www.typoland.com/http://www.typoland.com/designers/Lukasz_Dziedzic/CopyrightIn PDF document text
    • http://www.typoland.com/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/best_android_smart_tv_box_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/b_button_emoji_android.pdfIn PDF document text
    • http://xifetofaramil.rf.gd/wekamede.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/robotica_educativa_iniciacion.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/sugerogutupalutifa.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/canon_rebel_t6i_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/hills_feline_c_d_canned_feeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/1851096581.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_off0000e5e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E2 6168 bytes
SHA-256: 50bd8db5ff9a0f03ea6ac0366ab4ff273dceb6ff0c6101ac0faff1fd52ccc92d
font_01_sfnt_off0000f584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF584 5372 bytes
SHA-256: 82fa639f6ef9bea2373b7dc4f53637d3f668e52ba8fc0bf0c56ff7f4cc14f7bc
font_02_sfnt_off000107dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DD 10580 bytes
SHA-256: dd4bdada9f5d72b9e326a118b587ac49c9c1fb34921000a15d2f950e05ec02f4

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