Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc38448e6b91253…

MALICIOUS

PDF

83.3 KB Created: 2021-03-31 17:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 518a326c8baef12fabf020115dae47ad SHA-1: 89d3b0d9ace83c0c5fe00264a57763f3dff87490 SHA-256: bcc38448e6b912531c1357cbf27de477230da244f811358133dad6ea2b75a9c6
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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=nina+gray+maiden+name PDF link annotation
    • http://virepidutajal.iblogger.org/92160002787.pdfIn PDF document text
    • http://dafusunefu.iblogger.org/30920744821.pdfIn PDF document text
    • http://gulexamotapa.iblogger.org/kijokeluginisuzuliwox.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/ijyj81V/xulizozenometoxipizufavo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_60349e4709c7d.pdfIn PDF document text
    • http://posoxazizemates.22web.org/14986685425.pdfIn PDF document text
    • https://xokefinodoju.weebly.com/uploads/1/3/5/3/135316617/9595152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_6054b004757c0.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/ifYChga/color_chart_mixing_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418788/normal_601aabad0e632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414486/normal_60501f0244b9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504791/normal_600002571fb57.pdfIn PDF document text
    • https://cdn.sqhk.co/kabevapixox/egfkihe/too_many_balls_in_the_air.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/acqgihc/10194019615.pdfIn PDF document text
    • https://wikamarelifegef.weebly.com/uploads/1/3/4/3/134380256/nezavajuk_tivufapubavifof_likexotow_xusufiwibiwa.pdfIn PDF document text
    • http://xiwixewepisez.22web.org/32371610050.pdfIn PDF document text
    • https://cdn.sqhk.co/fezusife/I2gg7VB/83067103942.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wogijotiko.epizy.com/beluronuwoxopavufog.pdfIn PDF document text
    • http://sumoguvovubipil.epizy.com/refudenirobevab.pdfIn PDF document text
    • http://jenigaseze.epizy.com/crystal_reports_viewer_visual_studio_2019.pdfIn PDF document text
    • http://wazuvolixevafo.rf.gd/self_actuated_pressure_control_valve.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FC 5008 bytes
SHA-256: b897342f5f40c6a48a3c9ec9f5d9a1336aacc3301e41201544140339a866cae1
font_01_sfnt_off000103fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FB 11528 bytes
SHA-256: 3400bbaa06f3b6ff16da181351b098b2a5574afac4896712fbf88e91fb0a76fe
font_02_sfnt_off00012b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B21 16080 bytes
SHA-256: 0f592f62031d55fa1d0fb4718f5d067d1987426a283bb2ebc7a28ae7d8d4812e

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