Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e0c07b643c23ae…

MALICIOUS

PDF

82.5 KB Created: 2021-03-08 00:26:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 44cb93ad73eea130ebf4a720f2ba1910 SHA-1: 16693c86cfe6af74525dfc19d651bf21260eef25 SHA-256: 17e0c07b643c23ae57d9f75a3ffc239d49621a0e7142b5033c7cdde43edf91e7
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://midufefew.ru/wix?keyword=las+luces+de+septiembre+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/pojizurigos/jXghJib/umc_covid_testing_hours.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475212/normal_5fddd8690d675.pdfIn PDF document text
    • http://firstsecu-paypal.com/ravekeputozunuxedbl1yp.pdfIn PDF document text
    • http://jopagozopive.medianewsonline.com/how_to_reset_filter_light_on_whirlpool_refrigerator.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/jRfgfjT/robots_destroyer_red_siren_mod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_60373907c06c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454820/normal_600662a843cb0.pdfIn PDF document text
    • http://venira.su/lds_emotional_self_reliance_videos8y5wx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5fca384feebad.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/zhcsKjd/crew_restaurant_greenwich_ct.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443356/normal_5fcc73e461bb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387230/normal_602058a8b63da.pdfIn PDF document text
    • http://chisto-chisto52.ru/35697534189c5hxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393204/normal_60305a7245934.pdfIn PDF document text
    • https://cdn.sqhk.co/welosezu/Qgshiao/zibosopozek.pdfIn PDF document text
    • https://cdn.sqhk.co/bulegumu/dhbhd09/win_at_pocket_ant_simulator_mod_apk_happymod.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/ighckji/hmrc_self_assessment_tax_return_help.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_601d308c1e56f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_60220a9249469.pdfIn PDF document text
    • https://cdn.sqhk.co/xafileme/jcggeUo/kidcity_hello_neighbor_granny.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/mossberg_930_spx_magpul_stock.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://letutemoxeluz.onlinewebshop.net/samsung_55_inch_led_box_dimensions.pdfIn PDF document text
    • http://padegijogul.atwebpages.com/papizegol.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/maths_practice_worksheets_for_class_5.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_off000102a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A5 5556 bytes
SHA-256: ffe4ce223bb2c7386a385db6e2073749c22e151bbf0fc20f334619316ce296f0
font_01_sfnt_off00011571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11571 11512 bytes
SHA-256: 854775c838063f061af0b829fa9a71ff584cab81c91c6b89a5832f8788adecfa

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