Malicious PDF — malware analysis report

Static analysis result for SHA-256 e459a3fcc0b1b6be…

MALICIOUS

PDF

68.5 KB Created: 2021-01-26 19:34:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 36b49612d7bf6d088d59d9f61e0bf8de SHA-1: 99c70befb6caac02e73d4839f77337125a40ec5b SHA-256: e459a3fcc0b1b6be600d7060964d60f3870e3bf5793c4fe013adf5ff82d38562
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://jottigo.ru/shook?utm_term=virtual+families+2+master+career PDF link annotation
    • https://xefinaloze.weebly.com/uploads/1/3/2/8/132814425/c3eab.pdfIn PDF document text
    • https://rizigavitud.weebly.com/uploads/1/3/4/5/134581125/6177f930c7d8da6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489415/normal_5fe8ab96ab892.pdfIn PDF document text
    • http://igbusinessabouthelp.com/3771626586ac2jr.pdfIn PDF document text
    • http://freds.space/kivilelabodoxobevoaztgo.pdfIn PDF document text
    • https://biruwilajefi.weebly.com/uploads/1/3/4/6/134651793/zosibikeve.pdfIn PDF document text
    • https://setowunujabid.weebly.com/uploads/1/3/4/0/134095848/varaxoke.pdfIn PDF document text
    • https://fezuwarojeti.weebly.com/uploads/1/3/1/3/131383544/nelizopumigoj.pdfIn PDF document text
    • http://espacecmb.xyz/tadikewurezire79uw.pdfIn PDF document text
    • http://podarokinsta365.site/korigozimupunakugifcamq5.pdfIn PDF document text
    • http://unreguezff.rest/66579870750xaig4.pdfIn PDF document text
    • http://form-lnstagramcopyrightservices.com/wexupukewd53zu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vegewamofuxa.rf.gd/bibafegujafafumusilireder.pdfIn PDF document text
    • http://pevurevakube.rf.gd/designation_letter_format_in_word.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/avery_label_templates_for_indesign_mac.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_off0000cf8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8C 5124 bytes
SHA-256: 9bd3ebae30c807eae58efcb2c06d613deeb5ea1afa1f64535aa187eb6932ad72
font_01_sfnt_off0000e0ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0EC 10716 bytes
SHA-256: 7a781a58ac907bacbb9283159b16a7fa53f2bfc7f83f64919526b4060c5bbb4d