Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2ddfbc1acfc579…

MALICIOUS

PDF

75.6 KB Created: 2021-02-16 21:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: eed7eddae443a6fd26d631bd740b9483 SHA-1: 67a01f40705b8feaafef2dc7c36efcfac8cd32cf SHA-256: 6b2ddfbc1acfc579a85eee04eda543343369b0ba0351389ff3076e4d4639fe7b
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 content, though heavily obfuscated, appears to be related to the lure text. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect the user to a phishing site or download a secondary payload.

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
  • 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/strik?utm_term=how+to+program+genie+remote+to+garage+door In PDF document text
    • http://andyhong.blog/819309323089fdn4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5ff42ce13ae78.pdfIn PDF document text
    • http://talebakela.iblogger.org/45096349470.pdfIn PDF document text
    • http://bevatijiwavefad.22web.org/group_a_streptococcus_treatment_guidelines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_6026c1473a74f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414156/normal_6010d822198f7.pdfIn PDF document text
    • http://pafiwuz.66ghz.com/listening_practice_through_dictation_3_answer_key.pdfIn PDF document text
    • http://jukekelexoseda.22web.org/82512179963.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/donake/king_size_platform_bed_frame_diy.pdfIn PDF document text
    • http://ledaxefamadore.epizy.com/template_for_making_a_word_search_puzzle.pdfIn PDF document text
    • http://pekopun.epizy.com/cumulative_flow_diagram_safe_information.pdfIn PDF document text
    • http://xowulibi.rf.gd/gakobipoduvajezorovevaga.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/do_soundbars_have_good_bass.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/top_50_movie_s_sites.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/game_tekken_tag_tournament.pdfIn PDF document text
    • http://jutesokom.rf.gd/doxirabekazu.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_off0000de5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5B 4908 bytes
SHA-256: de5f99c9f8f6021198eaf3a1164d3129e4ba2fea71b2a6ac9e957a6d5ef0bc3f
font_01_sfnt_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 10512 bytes
SHA-256: 3d69eba4a25e092aa6960032b6a83d3cf75f1f20e569f6fed0f00d23f4d8f5ac
font_02_sfnt_off0001130c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1130C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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