Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5de1728c96e6181…

MALICIOUS

PDF

71.7 KB Created: 2021-03-05 01:07:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 758c55f0baa2b16465ace3fdd5c7169e SHA-1: 95cede0e2f02b0116715922970a64455824861b2 SHA-256: c5de1728c96e61812c4e5d094cb5dc0468552d0cc45bf3c8cb5c57e4e0a4da53
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/award?keyword=avital+3100+installation+manual PDF link annotation
    • https://volufijipezuji.weebly.com/uploads/1/3/4/7/134703795/1ad0b.pdfIn PDF document text
    • https://dunifavopugi.weebly.com/uploads/1/3/5/3/135312205/tapag_tewozomopegeni.pdfIn PDF document text
    • https://wumezovavupod.weebly.com/uploads/1/3/4/7/134741594/vigabulogob.pdfIn PDF document text
    • https://nidimojisojetuz.weebly.com/uploads/1/3/5/9/135962904/8674452.pdfIn PDF document text
    • http://wavasesinile.22web.org/risafewaxomovuzexusuwabu.pdfIn PDF document text
    • https://kerimoseb.weebly.com/uploads/1/3/5/2/135299904/resod-wipokun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_5fe823da6169e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411696/normal_6034477b4247c.pdfIn PDF document text
    • https://ruwuragawani.weebly.com/uploads/1/3/4/3/134383911/refafox.pdfIn PDF document text
    • https://migomazi.weebly.com/uploads/1/3/1/4/131407029/nuvixuwitezazobuvan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486033/normal_6037637069c65.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e1103bf1-56a9-4cae-8fed-cfdf16105331/6698972972.pdfIn PDF document text
    • http://nusilemil.epizy.com/how_do_you_set_an_armitron_wr165ft_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/034ad991-2dea-4637-a582-e3d710d6192c/68798267946.pdfIn PDF document text
    • http://jefeduwikiw.epizy.com/clinical_anatomy_by_systems_snell_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/954a3538-3e31-4900-94b4-bce821de4521/what_are_the_types_of_zodiac_signs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98d8cd0d-19bd-402b-a20a-21011cfd4630/wizeveweletavafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df05a05d-8bc7-4546-a365-7d2859090ee2/the_ugly_american.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/74170205864.pdfIn PDF document text
    • http://fefisapuvekebi.epizy.com/accu_chek_aviva_codice_errore_e9.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/74709662360.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_off0000cfbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFBC 4908 bytes
SHA-256: ae9558274a6521229a0da7e6756929950f8b59a926c3125fedd66e3463c9f1e7
font_01_sfnt_off0000e04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 10236 bytes
SHA-256: 4e8851fd4da13c3016bef5607f5ff6c35b41199ed4fb092a4363afe321a7a42c
font_02_sfnt_off0001035d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1035D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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