Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85627b081bed61f…

MALICIOUS

PDF

75.3 KB Created: 2021-02-23 23:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: bb8284ac494fb5a272ed1345913bac92 SHA-1: a6dd872dc420305084106122c598063a1a5260d4 SHA-256: e85627b081bed61fba7522acc3ff5e613671f83e7391c07f7f94a6f65615a950
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one prominent URL pointing to a site offering 'wild blood offline apk free download'. This suggests a phishing or potentially unwanted software distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wix?keyword=wild+blood+offline+apk+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381752/normal_601d6efc51017.pdfIn PDF document text
    • http://sefobadivura.iblogger.org/25089327598.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409243/normal_60249c1cc6f9a.pdfIn PDF document text
    • http://funuvumolifedaj.iblogger.org/62600798008.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476927/normal_5fd313463c70a.pdfIn PDF document text
    • http://glossywp.online/what_is_the_best_rated_portable_hot_tub_temperature3mv7o.pdfIn PDF document text
    • https://pefikasulanak.weebly.com/uploads/1/3/4/3/134350375/7f6f4.pdfIn PDF document text
    • http://malalij.iblogger.org/here_come_the_sun_piano_sheet_music.pdfIn PDF document text
    • http://xtreme-sport.ru/sa_ambulance_cover_form_2019iejft.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
    • http://zivunoked.epizy.com/internship_project_report_format_for_b._com.pdfIn PDF document text
    • http://lelisavebak.rf.gd/asuran_tamil_movie_bgm.pdfIn PDF document text
    • http://bewaxibazo.epizy.com/bharat_gas_new_connection_form.pdfIn PDF document text
    • http://sekusasumoda.rf.gd/20391049914.pdfIn PDF document text
    • http://xedovafimolodem.epizy.com/27811649293.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_off0000de17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 4876 bytes
SHA-256: 72fd96806aeacfd81f028a025fb705ed577025e5ea7de90f2d695489d29a7148
font_01_sfnt_off0000eebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBE 10436 bytes
SHA-256: a80297e0b2fbdc760029a3a15498c8e9b91977fe37d31f629c1fc413cae1598f
font_02_sfnt_off0001125f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1125F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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