Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0feb51333f4f4f…

MALICIOUS

PDF

79.0 KB Created: 2021-05-04 11:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d2835d1dea8a22042a308fe49fb1625d SHA-1: 59b25951afb7c359a3f9596fca4eddadb81b52b0 SHA-256: 9d0feb51333f4f4fa52fccc9f1a034731d338831a1a62735240d11bbdc418257
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://soxebez.ru/strik?utm_term=epson+workforce+wf-3640+error+code+0xf1 PDF link annotation
    • http://zekagepalido.iblogger.org/39420173693.pdfIn PDF document text
    • http://sun-italy.space/coffee_day_global_limited_annual_report_20175dl8c.pdfIn PDF document text
    • http://ubsvp.com/descargar_pelicula_el_coronel_no_tiene_quien_le_escribasr8xi.pdfIn PDF document text
    • http://romeital.space/applock_fingerprint_pro_1._49_apkkjipg.pdfIn PDF document text
    • http://hisgohar.site/answers_to_riddles_in_squirrel_nutkinnbskm.pdfIn PDF document text
    • http://testertumentum.space/bad_banks_cast_crew5hb09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370059/normal_606306e69efe7.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/1723370.pdfIn PDF document text
    • https://tudegikugil.weebly.com/uploads/1/3/5/3/135317618/rikagira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465397/normal_6031531ec1f66.pdfIn PDF document text
    • https://tapojanez.weebly.com/uploads/1/3/1/3/131398133/pumuvisinigarabaw.pdfIn PDF document text
    • http://cheapestshop.xyz/738590419560juxl.pdfIn PDF document text
    • http://scoretdho.best/bhagwat_katha_in_marathi_freerp4nt.pdfIn PDF document text
    • http://acgmgroup.ru/602431759410m5wo.pdfIn PDF document text
    • http://ujjjrrrrr.space/89822782185ongki.pdfIn PDF document text
    • https://dojobojijiwum.weebly.com/uploads/1/3/2/6/132681334/xosidop.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/does_osha_require_chin_straps_on_hard_hatsidysj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477913/normal_6020bad70a94d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_601a45da90716.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f0ddeb88-3549-4a27-8821-6e3dd713f165.filesusr.com/ugd/2b74da_8d6702a69e044941930435438f6eec35.pdf?index=trueIn PDF document text
    • https://559ef5b4-38f4-491c-95f5-a6f57f0534fb.filesusr.com/ugd/1b862a_9ab795faa4e24ff9a3634edcd80bda68.pdf?index=trueIn PDF document text
    • https://9e77dbea-16d6-438e-9859-4a68c5388828.filesusr.com/ugd/3225da_5ec13edb4e0d474ca79f59d59460c82a.pdf?index=trueIn PDF document text
    • https://da99f664-88c7-4a27-98aa-0bbcec2e8f57.filesusr.com/ugd/66f3f9_654890729c0b4507928593209796ae35.pdf?index=trueIn PDF document text
    • http://nanoxamovafosox.epizy.com/animation_in_xml_android.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_off0000f6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E8 5720 bytes
SHA-256: 15f54f838de805632db6ffd6fc821180576dd154f5148235aeb90e38029d1d88
font_01_sfnt_off00010aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA8 10452 bytes
SHA-256: 29e89d12e0f4a4b3cacf66e9dc2db16be0d5c0f0cfb09fe4406abe20f0378097

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