Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9d4faf043123ede…

MALICIOUS

PDF

93.3 KB Created: 2021-04-15 00:03:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: af7aff7e6e62eb1b18662b249d44db73 SHA-1: b1be73343c0cc14ed24d3ddec1b1b3f2a0998222 SHA-256: e9d4faf043123ede856088b0c4effb0d3b710f3c3906382a8c1401a80957970b
126 Risk Score

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 0.9997

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://dafemum.ru/strik?utm_term=liftmaster+security+plus+2.0+not+working PDF link annotation
    • http://vsyahakasia.info/tidiritileze16wvi.pdfIn PDF document text
    • http://smartcoin.design/50539062406r8txr.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/igibvjf/dipabezalaxuxomo.pdfIn PDF document text
    • http://musc-media.xyz/siemens_hearing_aids_melbournelpeau.pdfIn PDF document text
    • http://naturalgood.space/zoxisukebuc7apj.pdfIn PDF document text
    • http://neyroskakalka.site/players_handbook_dungeons_and_dragons_5e3gvxa.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://obuv-kozha.ru/39586782217gopsm.pdfIn PDF document text
    • https://cdn.sqhk.co/kobamebexog/SjfHhio/nezonoxelope.pdfIn PDF document text
    • http://pelistens.xyz/experimental_probability_worksheets_grade_74l86r.pdfIn PDF document text
    • http://salearea.pro/feature_update_windows_10_1803_manual_downloadlxi6t.pdfIn PDF document text
    • http://yoga-italy.space/bhaijaan_elo_re_full_movie_720pav0lb.pdfIn PDF document text
    • http://yachtcharter.group/karijojajibzwdpg.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuputid/EShfGhj/pijolunapamavafiritemaz.pdfIn PDF document text
    • http://robertferrell.net/hungry_shark_mod_apk_iosybxer.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://s3.amazonaws.com/sitok/fugl-meyer_assessment_upper_extremity_fma-ue.pdfIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_f738b8931fbd45cbb771f2db6885483e.pdf?index=trueIn PDF document text
    • https://ce3a146a-d504-4efb-981c-4593fb85d965.filesusr.com/ugd/5b5da7_82697fb59c3241778beb8f25ec0181a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/bhagam_bhag_movie_mkv.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/wufadofidurek.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

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_off00011de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE8 5724 bytes
SHA-256: f391850ff74eb0a6f0ec518f1336f18ec3cc4efb5d2d06cc662d05f45330dde9
font_01_sfnt_off00013170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13170 11748 bytes
SHA-256: 2029e67f2d74796a1cef78b0e2dcf0cd3b0d62debc8069c1eaf550610db12dd9
font_02_sfnt_off00015971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15971 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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