Malicious PDF — malware analysis report

Static analysis result for SHA-256 49bdd84a890f70de…

MALICIOUS

PDF

102.4 KB Created: 2021-03-23 04:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: b3c0cb21e063de0ea9fb9dd1328a7f41 SHA-1: 45ca376efdea055db28d65368b194ecd9998ca2e SHA-256: 49bdd84a890f70de689d93dc8b8bc7b1e05ca830bbf75208ce17f1f91eeede92
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that uses a search term related to router password resets, suggesting a phishing lure. The PDF's structure and embedded content indicate it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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/strik?utm_term=asus+rt-n12+router+password+reset PDF link annotation
    • https://loxoratas.weebly.com/uploads/1/3/4/5/134507201/zadujiboru.pdfIn PDF document text
    • https://dutagoloz.weebly.com/uploads/1/3/0/8/130814416/rugites-lazurefopof.pdfIn PDF document text
    • http://damvglaz6.xyz/83636106523k72yj.pdfIn PDF document text
    • http://aov.one/setting_of_kubla_khans_palace_crossword_cluevcygt.pdfIn PDF document text
    • http://wildber.store/45546558028g14ab.pdfIn PDF document text
    • https://pemejelusapi.weebly.com/uploads/1/3/1/3/131398576/57ea31f425d5f9.pdfIn PDF document text
    • https://mubikopupisuf.weebly.com/uploads/1/3/4/7/134711770/f5c8a42e7.pdfIn PDF document text
    • https://zunepijubu.weebly.com/uploads/1/3/3/9/133986973/gulagetimel.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/9dcd2e206bad438.pdfIn PDF document text
    • http://bagomebefekixob.getenjoyment.net/daxepuzisul.pdfIn PDF document text
    • https://nuzefamulazoxiz.weebly.com/uploads/1/3/4/5/134582777/vozipapiwa.pdfIn PDF document text
    • http://sesalon.xyz/x_force_keygen_autocad_2019_freetbqei.pdfIn PDF document text
    • http://instgrmmverifiedbadge.com/how_to_carry_ar_15_magazines7i7hb.pdfIn PDF document text
    • http://cmbmarketing.agency/togowasijagekisevagameik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c7095c-d457-480f-8927-b71f3461d7d1/zilafenobesuteninosopu.pdfIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/baixar_livro_carcereiros.pdfIn PDF document text
    • http://rupesujutiwu.myartsonline.com/tomikubadebumitefabikuto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75ff394-8b58-4571-bf1f-1837c4f2a019/subidarudomuxor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9698a8-1c14-4036-900f-582b60549ca5/what_does_the_left_side_of_the_human_brain_control.pdfIn PDF document text
    • http://pixafur.atwebpages.com/96711709764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/677109c5-1805-4027-a789-fc613b5cb41f/les_miserables_novel_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572140f0-4663-4c70-8fa7-52b89ae294ec/30561143713.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CEE 4164 bytes
SHA-256: f01efab00a883708c8e93906c9519c21c6977a75798184ef4845920c370cb27e
font_01_sfnt_off00013ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BA2 5216 bytes
SHA-256: 8a8f83997d0fe3298cab46c69171d453b19f66fc259a4f22ac7e4a1bd239c7f8
font_02_sfnt_off00014d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D8F 12096 bytes
SHA-256: 121878fa9d2a916ea541789c19eb1e4c46ed303a7be96febba0db41035dd326a
font_03_sfnt_off00017548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17548 16336 bytes
SHA-256: 63ea0af8218f446c6951f657c90afa72f831e8a0c9caeff0df73427b8f47130a