Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfead21e5dbe4a92…

MALICIOUS

PDF

70.9 KB Created: 2021-03-21 05:17:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f76524a2b749db96f8f56566b9a7098a SHA-1: 3dc28a6f59ee62e4021cc7040e641e23cfc73b39 SHA-256: cfead21e5dbe4a927ac538a3b26836363c3333367bcce8658a810cce39ce6b17
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/award?keyword=scripps+spelling+bee+word+list+2020+pdf PDF link annotation
    • http://sokadap.22web.org/meri_pyari_behaniya_banegi_dulhaniya_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_600ed000c67a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487641/normal_602b3dcd3fa9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_6027d3372fb21.pdfIn PDF document text
    • http://raxuzogigegekaj.66ghz.com/plugins_ireport_para_netbeans_8._2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://878ee1be-828d-48b9-a24a-84283cf66a1c.filesusr.com/ugd/86936c_cbce7569431e49d1a078a133b5c17c3a.pdf?index=trueIn PDF document text
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_07b1c608b09f475db572003527452d49.pdf?index=trueIn PDF document text
    • https://e79dab91-b8ca-4f03-a7cf-74564eaa1d8a.filesusr.com/ugd/009cd4_4469ce8974234181a236138f5c00d327.pdf?index=trueIn PDF document text
    • http://vimitafukufes.rf.gd/61687418819.pdfIn PDF document text
    • https://d102a0f2-001f-4998-bb0a-88ac30ac05b5.filesusr.com/ugd/771ea4_874b4483fdee443d86c9780603b31ad8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/najubu/happy_birthday_wishes_photos_hd.pdfIn PDF document text
    • https://ce322291-b3da-4cc2-ae0f-523e25daec44.filesusr.com/ugd/4530da_0a1d205666b14e829dae0364b76567ba.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/ll._b_full_form_in_english.pdfIn PDF document text
    • https://b56e00ce-d729-42e9-814b-b9a4b194f5ba.filesusr.com/ugd/f6f93f_3fe049e5a9454ce88cdaf92d90c1dcb7.pdf?index=trueIn PDF document text
    • https://cbb9655c-b60d-4095-8c1c-bb5f9a2903c5.filesusr.com/ugd/4dd980_95ea7df2eff14f6cbf624923d31d8fd1.pdf?index=trueIn PDF document text
    • http://noxanaviki.rf.gd/comparison_of_adverbs_list.pdfIn PDF document text
    • https://21dbc830-6d60-48ad-8ab0-00d2b3cb69e0.filesusr.com/ugd/18d949_3a368846bd254faeb04673af5b19a1ba.pdf?index=trueIn PDF document text
    • https://1350f94c-8d6f-42b4-8351-24983ad6a49a.filesusr.com/ugd/4aae87_fb554a9372b8412ca832726e4e3f312c.pdf?index=trueIn 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_off0000d5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5AC 5724 bytes
SHA-256: ac7bd0bea18649936e7dec864c300ca7022369bb773747e34d52ad0ca7cd7be4
font_01_sfnt_off0000e94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE94B 10412 bytes
SHA-256: 3dff8da73737a8e763184410c92519505536b621a8bef7980a0bad463d75ea82

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