Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b3b971fd2364cd…

MALICIOUS

PDF

75.9 KB Created: 2020-12-25 01:30:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 27661c5e0b15bd28158cc771b7890b56 SHA-1: 88cb7c3dd08ea2af7fb1955446fe0046d2687d0c SHA-256: e2b3b971fd2364cdf1265fa943655aede6f4010a8e8d4d2141c14b009d62a3ff
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This indicates the document's primary purpose is to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL is sufficient evidence of a phishing or malware distribution attempt.

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://traffmen.ru/strik?utm_term=red+sunflowers+meaning In PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/JIw7jfr/how_many_notes_in_music_scale.pdfIn PDF document text
    • https://cdn.sqhk.co/fidapulano/ShyhflU/snowflake_ipo_date_2020_price.pdfIn PDF document text
    • https://cdn.sqhk.co/dabeluza/ThOhfpy/gexaguxajulidunegobumiw.pdfIn PDF document text
    • https://cdn.sqhk.co/kupovite/djeUe4C/men_s_fifa_world_cup_2017.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/mutirexa/answer_sheet_of_tina_dabi.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/vapozoredati.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/fox_movies_true_visions_tv_guide_thailand.pdfIn PDF document text
    • https://s3.amazonaws.com/lanowilovuviwib/25949692078.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/26154204658.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/manual_canon_5dsr_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/austin_community_college_transcript_former_student.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c50a1526-5ff8-460d-941a-7aeb57461f12/52567402517.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/software_house_ccure_9000_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/diocese_of_scranton_abuse_report.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/59077039928.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_off0000e007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 5128 bytes
SHA-256: 3298a64563f7c486bcc0b91399567b605378dc96dbd782feb57e8e0389c58c3b
font_01_sfnt_off0000f16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16F 10384 bytes
SHA-256: e890e02874f8da882bf0e67a7fb0f5cc512d7b858620938428e45fbc70dc5d1c
font_02_sfnt_off000114be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114BE 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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