Malicious PDF — malware analysis report

Static analysis result for SHA-256 5960eade97afc96c…

MALICIOUS

PDF

80.6 KB Created: 2021-02-25 10:44:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d4c8d12140ecc15cc82b22cb88fd8ef3 SHA-1: 08877200da7ece8275059690459f5acbfffceb3e SHA-256: 5960eade97afc96c58cb71b57f828dca3c8a8aef819063f9849c636d18fcb483
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of phishing lures designed to redirect users to malicious sites.

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://maypoin.ru/aws?utm_term=is+the+dyson+v6+animal+any+good PDF link annotation
    • http://gakagebir.mypressonline.com/govivizoj.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/gobodobubukosorubirenutus.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/3.3_proving_lines_parallel_worksheet_answers.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/96_ford_ranger_idle_problems.pdfIn PDF document text
    • http://guitar.su/gurajex1lfq6.pdfIn PDF document text
    • http://retamos.mygamesonline.org/who_has_right_of_way_in_parking_lot_backing_up.pdfIn PDF document text
    • http://tapozifokun.mywebcommunity.org/how_to_find_x_and_y_components.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/what_is_the_correct_way_to_wear_earbuds.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/67184025281.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/bosch_glm_15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://parepakikil.epizy.com/namula.pdfIn PDF document text
    • http://dogufisojorosef.epizy.com/36282632084.pdfIn PDF document text
    • http://wuvadofer.epizy.com/cero_rubias_libro_completo_descargar_gratis.pdfIn PDF document text
    • http://wupubobetob.epizy.com/93302289761.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/37419304211.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_off0000f4b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B5 5396 bytes
SHA-256: 2f0e4fabf27f785af4ff11d7b8718c3a8437a181657d19bfb72e7316494c1697
font_01_sfnt_off000106f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F4 2084 bytes
SHA-256: a56cfe8956c2ee176c5d2d7f0d09cfd9d885ee20848996a9603feacc361e9b9a
font_02_sfnt_off00010fff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFF 10908 bytes
SHA-256: 368cf7dde128f9704688c8b6837067ca49f5268bf7d7547a87bf7be39b4eec32

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