Malicious PDF — malware analysis report

Static analysis result for SHA-256 874e89995ef8ca5b…

MALICIOUS

PDF

73.6 KB Created: 2021-02-27 16:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 37216d49e110ee4c3ed42086d4fc071a SHA-1: a45c6bcd0363d4d83432353fbc6b77667200836d SHA-256: 874e89995ef8ca5be12ebec62dd1e7cf78a2c34b3afeede2f67ac9757c5cb7e2
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://gimoguvi.ru/wix?keyword=weight+mass+volume+relationship PDF link annotation
    • https://kuwuxegizeduki.weebly.com/uploads/1/3/2/6/132695805/ef092.pdfIn PDF document text
    • https://zelekunidos.weebly.com/uploads/1/3/2/6/132682808/joximaxatil_kikawoxodokitok_lovavugo_nurawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455375/normal_601e694588665.pdfIn PDF document text
    • https://xavabijikuz.weebly.com/uploads/1/3/1/6/131636819/9eaffdc87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382781/normal_6017c2ecc4b92.pdfIn PDF document text
    • https://zajuzuvo.weebly.com/uploads/1/3/4/4/134474050/zegovevifodun.pdfIn PDF document text
    • http://bumumapa.mypressonline.com/how_much_is_a_big_green_egg_xl.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/zobokobaxenuworofes.pdfIn PDF document text
    • https://vazigawexike.weebly.com/uploads/1/3/1/6/131606690/8774319.pdfIn PDF document text
    • http://gutufozif.iblogger.org/tevolufiwoxelabakaw.pdfIn PDF document text
    • https://logomeso.weebly.com/uploads/1/3/1/4/131438572/5efc90c4.pdfIn PDF document text
    • https://xalorato.weebly.com/uploads/1/3/4/3/134317389/dc8e891a1.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/46ecadcb7.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/6694e4b.pdfIn PDF document text
    • https://tevupiju.weebly.com/uploads/1/3/4/8/134865653/98affbc66.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tosogaxaf.rf.gd/tiwinovidadofojunujot.pdfIn PDF document text
    • http://kagiwabiluwotel.epizy.com/53009496047.pdfIn PDF document text
    • http://sibubixusa.epizy.com/how_to_determine_value_of_baby_grand_piano.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE426 5304 bytes
SHA-256: cc1d67e2d5268f0b6330e2d6ce0ee6051f7942042020efa05bf0357df88b34e2
font_01_sfnt_off0000f61c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF61C 10360 bytes
SHA-256: 42d617ca4bbfef9f5048815f5ea9e141b630431177a1894cb33136404db3a9d1

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