Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e06a406b68e7cc…

MALICIOUS

PDF

76.1 KB Created: 2021-03-20 09:06:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9a5685ed6dc61c57f233f3c4eec91e69 SHA-1: c984bf36eb0beff697af75c890fa9756abbbb3b0 SHA-256: 96e06a406b68e7cca55437f091b14beb2603697eae0c9493ae01d582096c1fcd
184 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://yafferge.ru/strik?utm_term=how+to+connect+hp+photosmart+plus+printer+to+wireless+network', is flagged as a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to printer setup, suggesting a lure. The presence of numerous links on disposable hosting further supports a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=how+to+connect+hp+photosmart+plus+printer+to+wireless+network In PDF document text
    • http://findattime.com/dewalt_20v_sds_hammer_drill_home_depotseehc.pdfIn PDF document text
    • http://jafinipu.scienceontheweb.net/baroque_and_rococo.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/pimowipoti.pdfIn PDF document text
    • http://gepanukotex.getenjoyment.net/muluporivuvorave.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/58927555358do6zf.pdfIn PDF document text
    • https://gunobome.weebly.com/uploads/1/3/1/3/131398345/fagemo.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/20554257149.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/66141498389.pdfIn PDF document text
    • https://nobaletakalesig.weebly.com/uploads/1/3/2/3/132302751/wezamofufozapu.pdfIn PDF document text
    • https://tebifenan.weebly.com/uploads/1/3/4/6/134675993/rimux.pdfIn PDF document text
    • http://jilet2.club/jebozagazajogin2qc6h.pdfIn PDF document text
    • http://jezopapurowejen.22web.org/graco_pack_n_play_mattress_sheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ac8321c-28d8-41c8-ac7a-99137a6fe030.filesusr.com/ugd/157ee0_51c5cdb794d64f3dab5aa20f23b5209a.pdf?index=trueIn PDF document text
    • http://molujafit.atwebpages.com/95308588455.pdfIn PDF document text
    • http://wudunerizipite.epizy.com/mastoiditis_adalah.pdfIn PDF document text
    • https://6cda4dd4-8aac-43e7-8003-7c0eea9f7907.filesusr.com/ugd/34e26e_f972cf2cbe344044a15d708ef98ef027.pdf?index=trueIn PDF document text
    • http://miwufojo.epizy.com/stock_market_bubble_pop_2021.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/bio_energy_healing_techniques.pdfIn PDF document text
    • http://piwolimosopobu.myartsonline.com/27390526206.pdfIn PDF document text
    • http://gamemogap.epizy.com/57674933035.pdfIn PDF document text
    • http://jiporiri.rf.gd/cancer_de_piel_gpc.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/17682831422.pdfIn PDF document text
    • http://zewadomi.myartsonline.com/variable_frequency_drive_working_principle.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_off0000ec09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC09 5292 bytes
SHA-256: 874b9d76a87741b2f65b254c5f1338b74499bd8b6caf38c9918a16ae99845394
font_01_sfnt_off0000fde6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE6 10748 bytes
SHA-256: 450e713b0b17a594e68bb7b21a5fdd132eeb98805a543ce59f343629ea5ee89f