Malicious PDF — malware analysis report

Static analysis result for SHA-256 cddc23b6ea63283d…

MALICIOUS

PDF

68.4 KB Created: 2021-03-01 13:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 79f4e781e4733ae2beebc77a8a76f1b2 SHA-1: 913b1aaadc30aeff714e4581b16c05f2df15da78 SHA-256: cddc23b6ea63283d6ccfbca5e2868effc46a4e3235818b8278a8efbd435e6bbe
126 Risk Score

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://druttle.ru/wix?keyword=case+studies+in+immunology+6th+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402520/normal_5fc9ec47566bc.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/how_to_fix_water_leak_in_kenmore_refrigerator.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367617/normal_6037557350d6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_6033edfd9625c.pdfIn PDF document text
    • https://xisotufonadate.weebly.com/uploads/1/3/5/3/135384012/5462587.pdfIn PDF document text
    • https://fimulumalopa.weebly.com/uploads/1/3/5/3/135326017/pawuxugugevukam.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/tezazit.pdfIn PDF document text
    • http://makebugobiwuka.mypressonline.com/73959618780.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/pentax_k30_vs_k500.pdfIn PDF document text
    • http://suvigulujuve.22web.org/junafegof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gofemotomikuroj.epizy.com/furufozori.pdfIn PDF document text
    • http://vetizonudaxow.epizy.com/53485051197.pdfIn PDF document text
    • http://wudemexa.myartsonline.com/dell_latitude_e6410_charger_specs.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/xugiwusafogozuz.pdfIn PDF document text
    • http://zugopenuk.epizy.com/69146498608.pdfIn PDF document text
    • http://vudexejuvejutek.rf.gd/wiletokojuparuwomaso.pdfIn PDF document text
    • http://wumugajus.onlinewebshop.net/ms_word_online_free_course.pdfIn PDF document text
    • http://gugamofizuxeg.epizy.com/ic_741_comparator_datasheet.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_off0000cf77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF77 5520 bytes
SHA-256: 40c1668b48da9129a0eb42b11a539c959c2c04dae6ab7b38ba92ddf0d30f63cc
font_01_sfnt_off0000e220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE220 10044 bytes
SHA-256: 70d6d819ecec2ee3d1992820f42968ddf2ee34353356df618fe39acf7f06a1d5