Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d97588a85d736dc…

MALICIOUS

PDF

70.8 KB Created: 2021-02-27 18:34:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 45abe6a2ab54559c01aeb5e76709dc09 SHA-1: b79c7a57650fba8db81a67528b65ffb74a4b9dd9 SHA-256: 5d97588a85d736dc30d9891b851b69d7ad60a559c80c78fba2947d568de36c3d
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 0.9992

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://jottigo.ru/123?utm_term=vegan+salads+for+weight+loss PDF link annotation
    • https://vevusivo.weebly.com/uploads/1/3/0/8/130874001/ribikabimeraxe-dewibewew.pdfIn PDF document text
    • https://pibefugaradaxo.weebly.com/uploads/1/3/1/3/131398186/gatukofajese_zafezonibevit_monixes.pdfIn PDF document text
    • http://turopedadogexub.22web.org/lezuwega.pdfIn PDF document text
    • https://pelimabogex.weebly.com/uploads/1/3/4/6/134685965/4ac95.pdfIn PDF document text
    • https://vizumijolotetip.weebly.com/uploads/1/3/5/3/135394273/suvofolitinunufa.pdfIn PDF document text
    • https://cdn.sqhk.co/pulafefer/jgcyiap/jewels_temple_fantasy_mod_apk.pdfIn PDF document text
    • http://aazzzry.space/580_words_level_2jeoc4.pdfIn PDF document text
    • https://cdn.sqhk.co/komagiju/jfhahZE/brain_puzzle_3d_games.pdfIn PDF document text
    • https://vinazawodix.weebly.com/uploads/1/3/4/3/134352366/9725994.pdfIn PDF document text
    • http://rofodas.22web.org/soundabout_apk_uptodown.pdfIn PDF document text
    • http://halfraire.xyz/limma_user_guidekwzwa.pdfIn PDF document text
    • http://kukusorukabapoj.iblogger.org/teninetasopiroxi.pdfIn PDF document text
    • http://lodomujimujug.mywebcommunity.org/john_deere_d110_riding_lawn_mower_parts.pdfIn PDF document text
    • http://mainsale.info/fewununeramirozavu83p.pdfIn PDF document text
    • http://dinodosum.iblogger.org/financial_statement_analysis_report_doc.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/saxekevujakuganolekokokow.pdfIn PDF document text
    • http://hrushch.space/yaesu_ft2dr_firmware_update1c083.pdfIn PDF document text
    • https://cdn.sqhk.co/mepejuwaj/heyrp2D/doge_miner_2_crazy_games.pdfIn PDF document text
    • http://dejijesumewir.22web.org/1100_hv_to_hrc.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/geChaHu/trail_climb_mod_apk_android_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wowopukasofuz.rf.gd/tonal_harmony_workbook_8th_edition_answers.pdfIn PDF document text
    • http://gamugeko.rf.gd/scientific_notation_calculation_practice_worksheet.pdfIn PDF document text
    • http://tuwojusedikemi.rf.gd/autumn_in_my_heart_thai.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D4 5224 bytes
SHA-256: 79db6cf7102d128166d40bcf2d68a7a291a4c638be0ddecb64d9913364c43a01
font_01_sfnt_off0000eaaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAA 10116 bytes
SHA-256: c47342ec87a82387b3681e577e1330a39f9280332eb1bca111e086c3d6fcdb35

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