Malicious PDF — malware analysis report

Static analysis result for SHA-256 7077109c9d709072…

MALICIOUS

PDF

80.4 KB Created: 2021-04-15 00:01:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0626dd1d12af73093e2def2fed9f484a SHA-1: e96736a9337a8d755a2fec2a2656471fac6bbd9a SHA-256: 7077109c9d709072a3e1fe6939785bcc8750f6615a79d0a8185de161c569a08b
134 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicative of a link farm designed to obscure the ultimate destination. The presence of a 'download button' heuristic and ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a malicious document designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://leonvi.ru/strik?utm_term=how+do+you+do+hidden+pictures+on+iphone PDF link annotation
    • http://zesaguzijor.mypressonline.com/pabakeramitawo.pdfIn PDF document text
    • http://leadtop.co/do_critical_hits_always_hit_5e0lmxs.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/TUDhjDU/31100900492.pdfIn PDF document text
    • https://cdn.sqhk.co/nozelenid/GEjggc3/lebaran_idul_fitri_2020_bulan_berapa.pdfIn PDF document text
    • http://usesucre.pro/wilinokuwushg5b.pdfIn PDF document text
    • http://setlyb.online/fotetoxu608vi.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/is_it_correct_to_say_the_reason_is_becaused3dt1.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/how_to_become_a_software_development_engineer.pdfIn PDF document text
    • http://pusovemolexed.scienceontheweb.net/11414789520.pdfIn PDF document text
    • http://nepoxiduvilej.scienceontheweb.net/who_is_the_most_good_person_in_history.pdfIn PDF document text
    • http://usmileofficial.site/how_to_make_holy_oil_from_the_bibletc5fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/5f14039e-fa46-481d-b739-7e61459b57fe/bow_tie_pasta_salad_with_spinach_and_feta_cheese.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/jofib.pdfIn PDF document text
    • https://97d49ff2-d914-4ae4-8ac8-5e5cf5f77cad.filesusr.com/ugd/6350c7_af03e0986f81405db3471e385e99fb1e.pdf?index=trueIn PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_e9964405864546ee8482a394ba2168f3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f52f6fa-811b-413c-80d1-6423f400deed/how_to_solve_imaginary_number_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b031f260-d0ef-46af-b087-b5b964560a68/wizilozukefametate.pdfIn PDF document text
    • http://ligekasuxube.onlinewebshop.net/69641413003.pdfIn PDF document text
    • https://12c21f6a-324e-488c-af83-7e1076049286.filesusr.com/ugd/e84f25_7dea0db35d8d4d4c9944584788b8a166.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/casio_g_shock_waveceptor_tough_solar_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/sportdog_shock_collar_replacement.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 4956 bytes
SHA-256: 4bdf1e5ae4c8eabe18fb4923e35bf983a7a2b9752b5ef4b2867288e08fbbf445
font_01_sfnt_off0000ff4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4E 11124 bytes
SHA-256: f4dc573a99187598d4d3bd34dc37cf13685818f48edd8b196269a9ae0a34229a
font_02_sfnt_off0001256e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1256E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c