Malicious PDF — malware analysis report

Static analysis result for SHA-256 9397d48ed357bc49…

MALICIOUS

PDF

86.1 KB Created: 2021-03-14 13:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ea4ce7be2c8e3c5834d99d8b0b4610c4 SHA-1: 5ae8c4da61d14d0a9ca41c4b5671096bdba12f96 SHA-256: 9397d48ed357bc49779e03c2037f15fa19c457ac191385d555c5a44d60129cde
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://pelibifir.ru/wix?keyword=love+nikki+cheats+codes+december+2019 PDF link annotation
    • http://varistop.site/how_to_install_linksys_ac1200_wifi_range_extendery1uj9.pdfIn PDF document text
    • http://menazubuta.iblogger.org/uttrakhand_b._sc_nursing_form_2018.pdfIn PDF document text
    • http://zanexipizuzog.iblogger.org/74123163179.pdfIn PDF document text
    • http://espaceclient-cmb.com/the_sims_4_product_codesy1qhn.pdfIn PDF document text
    • http://bristol-yalta.run/de_que_trata_el_libro_del_alquimista_de_paulo_coelho0o4zt.pdfIn PDF document text
    • http://rusherx.studio/electrical_engineering_dictionary_apkr3q9l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fikamax.epizy.com/lost_in_yonkers_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e28ba42-6969-4063-8ab8-66b2fed5c51f/63751598561.pdfIn PDF document text
    • http://bekugasil.rf.gd/edital_da_prf_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/fannie_mae_rental_income_worksheet_fillable.pdfIn PDF document text
    • http://noserupoxor.rf.gd/muxifejotanofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06c2e9b-36f8-43cd-922c-79a3ce3eafdd/fizigiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de40a45-ac63-4260-98b2-8dba1499e2b7/canon_mg3120_ink_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/6977836795.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/9372460118.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/segul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a41a40ad-ff82-43d0-9708-2e72e9775873/poboza.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/bootstrap_form_validation_angular_7.pdfIn PDF document text
    • http://sumekumamefos.epizy.com/grammar_exercises.pdfIn PDF document text
    • http://dijazulebok.epizy.com/carry_on_suitcase_dimensions_united.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6B 3092 bytes
SHA-256: c41cc1af87fc5f0fc2418a9da233c6760da37135ebdd73a732daf1d93d8e0cee
font_01_sfnt_off0000f57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57A 5836 bytes
SHA-256: 839bb926d86e93e3bc4cd243e46a3bd091775ba57a5c1e1dabc75a05826b1731
font_02_sfnt_off00010929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10929 12852 bytes
SHA-256: d33867a1790a7f4cda83c45a5f6fae40957bc1af384b6bface716b314fa204ea
font_03_sfnt_off000134f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134F0 16280 bytes
SHA-256: 11a83a2aeda08769c1acee23f8b776f6cbeee681baf4dd922d721b0aa106dc7f

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