Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81ba43358df6aca…

MALICIOUS

PDF

72.2 KB Created: 2021-03-02 20:38:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89aa65ae9b9ac886679abcec55ed6f87 SHA-1: 9398a748eb9284c1a33821cfd6423ff0c4058a11 SHA-256: e81ba43358df6acad22632b4ae6b9d5894e70fd6e22aece059c677f43ed18184
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=sensory+profile+2+user%2527s+manual+pdf PDF link annotation
    • https://tojipojewusaw.weebly.com/uploads/1/3/0/8/130814735/5045fb42b8a.pdfIn PDF document text
    • https://nukuzalidoredul.weebly.com/uploads/1/3/4/7/134768970/6f1fb7bc.pdfIn PDF document text
    • http://life50it.pro/millennium_950_keypad_manualdnblr.pdfIn PDF document text
    • https://cdn.sqhk.co/kefofepobam/ic8Cge5/piano_keyboards_for_sale.pdfIn PDF document text
    • http://nudistoff.club/the_laugh_of_the_medusa_criticism7jgb2.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/beluwinufiwaxivepo.pdfIn PDF document text
    • http://sijubuwejipamun.mywebcommunity.org/xebuna.pdfIn PDF document text
    • http://esmoney.site/what_is_the_main_point_of_the_sisyphus_mythauh2n.pdfIn PDF document text
    • http://asta-stroy.ru/inverted_and_natural_order_sentences_worksheetsuuek6.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/oral_b_triumph_professional_care_toothbrush_heads.pdfIn PDF document text
    • https://cdn.sqhk.co/doxelatofon/ai5mAVF/electrician_s_bible_lite_app.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/69066671989.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/vilokofazajikaxifowok.pdfIn PDF document text
    • http://indonesia2health.online/nufutuxunovugovujeparixod3z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 5556 bytes
SHA-256: 3b000d2e90893c05bdf032b3c46acb85000a834ef2679419e7971a64f8474df6
font_01_sfnt_off0000ef72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF72 10824 bytes
SHA-256: 2c49c498e3c02aa7e0cc917e593444c5a5b3fb047b4d5c24e578da7311397c2b