Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f19a3de315483c…

MALICIOUS

PDF

74.0 KB Created: 2021-03-01 22:59:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 47b9acef2b1ef8bd71427bde1dee4fb3 SHA-1: 9e6a9e56eda902fc6fd1b9d9323ee2098947917a SHA-256: 14f19a3de315483c14e721add383794113ea1c10e2a6aced5c1582e49da153d4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by multiple heuristics, including a link farm detector and a machine learning classifier, indicating malicious intent. The embedded URLs and the PDF's structure suggest it is designed to redirect users to potentially harmful websites, likely for phishing or malware delivery. No scripts were extracted, but the overall pattern strongly suggests a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/wb?keyword=can%20you%20draw%20on%20a%20samsung%20tablet PDF link annotation
    • http://shtangennstutkupitseychas.xyz/lojasebyoep.pdfIn PDF document text
    • http://bcipreactivaperu.com/bikofipigepofbzp8b.pdfIn PDF document text
    • http://gojavodevagajuw.mygamesonline.org/what_is_the_largest_constellation_in_the_northern_hemisphere.pdfIn PDF document text
    • https://cdn.sqhk.co/bilexodofose/jedmUid/86131812195.pdfIn PDF document text
    • https://foboxujegi.weebly.com/uploads/1/3/4/6/134694162/329bc.pdfIn PDF document text
    • http://wowunoli.22web.org/bonukezobapoxekife.pdfIn PDF document text
    • http://dmgameplan.com/there_is_there_are_worksheetr12gw.pdfIn PDF document text
    • http://pelistens.xyz/43755172875hd15z.pdfIn PDF document text
    • http://dimax.website/solulovubesakolaleju92m8q.pdfIn PDF document text
    • http://pewagupudasita.22web.org/mifejukejiwuv.pdfIn PDF document text
    • http://afracheat5.xyz/3865280569855hub.pdfIn PDF document text
    • http://werenntaq.online/vanguard_imaginary_gift_templatedhn2k.pdfIn PDF document text
    • https://nunatazireru.weebly.com/uploads/1/3/4/6/134698050/sugikagan.pdfIn PDF document text
    • https://jinepesel.weebly.com/uploads/1/3/5/3/135346763/c5964def28f7e.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/zumomadevavusiz.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/zezulevekaponovifo06qm6.pdfIn PDF document text
    • http://kinoxca.xyz/biloropinomavekanigarupojt6vb0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vorisenunajix.myartsonline.com/lurakakafosav.pdfIn PDF document text
    • http://rewogigove.epizy.com/38350228188.pdfIn PDF document text
    • http://demajipo.rf.gd/birth_control_options_spanish.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_off0000e5b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B0 5384 bytes
SHA-256: abc71ab5df6bf6560cd08e60907a2b89a7d87a9f3b1e7f66e83e18bf8e9e407f
font_01_sfnt_off0000f7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FD 10188 bytes
SHA-256: 262ad61041fb57236d956df86aa0f62f6538bac581a65b115d92a71b32ac4694

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