Malicious PDF — malware analysis report

Static analysis result for SHA-256 6172c1f237d48477…

MALICIOUS

PDF

178.2 KB Created: 2021-03-13 14:54:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 287636dd0eea8d88b33338f5712ebfcb SHA-1: 51ebdace451aaa1eb3be12c0487d307d28e52e1c SHA-256: 6172c1f237d4847727e860a93fa069c094cc13d27579088a848c04b2a6b68478
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 attempt. The document body, though heavily obfuscated, contains text related to a school calendar, likely a lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect the user to a phishing site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://dafemum.ru/wix?keyword=ji+barron+elementary+school+calendar In PDF document text
    • https://cdn.sqhk.co/nefijisob/dibgfU2/84299825317.pdfIn PDF document text
    • http://menformula.xyz/abdul_kalam_novels_in_hindi7td14.pdfIn PDF document text
    • http://tricitysikhs.com/how_to_program_dsc_wireless_motionuc2up.pdfIn PDF document text
    • http://letgtma.bid/harry_potter_deathly_hallows_part_2_cast_age9k7y0.pdfIn PDF document text
    • http://omoikiri.info/sinopsis_del_cuento_la_gallina_degollada2og67.pdfIn PDF document text
    • https://cdn.sqhk.co/natefisaka/A5Ngjhf/13199874305.pdfIn PDF document text
    • http://petajofap.22web.org/how_powerful_is_naofumi.pdfIn PDF document text
    • https://cdn.sqhk.co/dosazuleg/BhcnijU/free_customer_loyalty_punch_cards_templates.pdfIn PDF document text
    • http://mopobixufiveve.22web.org/what_is_the_average_pay_for_automotive_technician.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/HThhtii/cute_girl_avatar_maker_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jufazireti.rf.gd/ahir_image_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/revopufogavo.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/dragon_ball_legends_pvp_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/nina_godbole_cyber_security.pdfIn PDF document text
    • http://zobatokuvanoz.epizy.com/biomaterials_for_tissue_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/messenger_lite_apk_update.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/based_on_the_article_what_is_the_importance_of_literature_review_in_writing_a_research_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/diwali_wishes_html_template.pdfIn PDF document text
    • http://siwikigek.rf.gd/86966778803.pdfIn PDF document text
    • http://mizozibobekujul.rf.gd/contractions_worksheet_for_grade_5.pdfIn PDF document text
    • http://jirulesonena.rf.gd/namugowunezok.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000282cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x282CD 5412 bytes
SHA-256: 8c180f453a4a885c6c874207cc72a9e4a6c41a531dd3c8a763456c9279ea28df
font_01_sfnt_off00029508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29508 11116 bytes
SHA-256: f413bbcdd5a65be286ba961a73cc04ae038baf8d2aacf2b27fd9796afc4b5087

Open this report in the interactive analyzer, or submit your own file for analysis.