Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00493d022067174…

MALICIOUS

PDF

73.8 KB Created: 2021-03-20 22:12:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1894bb61194399e39bf48ab22291503d SHA-1: 9c0f9ac4af02fb58c0464c5b9b2e8dea475bd1ed SHA-256: e00493d0220671743ad9bfa4af7c67f89cdc82930032af052807f81a819d9982
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 0.9992

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://bologen.ru/award?keyword=multiple+regression+formula+pdf PDF link annotation
    • http://storefromit.pro/48178194194cfqoy.pdfIn PDF document text
    • http://fabikaj.iblogger.org/5604337582.pdfIn PDF document text
    • http://help-service-support.com/how_to_make_your_friend_fall_in_love_with_you_wikihow5znr7.pdfIn PDF document text
    • http://redarirot.iblogger.org/sibegebijanide.pdfIn PDF document text
    • http://zitalogeloluwiw.mygamesonline.org/malthusian_theory_of_population_growth.pdfIn PDF document text
    • http://pazifelurup.medianewsonline.com/notability_annotation_ipad_pro.pdfIn PDF document text
    • http://sawegazid.iblogger.org/cervical_cancer_screening_guidelines_bc.pdfIn PDF document text
    • https://cdn.sqhk.co/voravaxa/cii5jaT/15683246366.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/cijDAgh/50102027112.pdfIn PDF document text
    • http://pmaider.com/the_way_of_mastery_author4a5n0.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/the_castle_kafka_analysis.pdfIn PDF document text
    • http://dexaputanit.mygamesonline.org/vw_kirkland_service_hours.pdfIn PDF document text
    • http://instapriz.website/pozedobomumafal225fg.pdfIn PDF document text
    • https://cdn.sqhk.co/dujagazatad/iTge3hd/naval_games_ps4.pdfIn PDF document text
    • http://moxilekulina.getenjoyment.net/addition_table_1_100.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/75da4a4a-25a7-4593-90c4-9f5388fdf99b/click_clack_moo_activities_for_preschool.pdfIn PDF document text
    • http://tevisub.rf.gd/gezedumepexodusulexiridib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ae7be2-1549-4f29-ae3e-b5e55549f8a6/58422879967.pdfIn PDF document text
    • http://berifukozek.rf.gd/bascule_jk_table_de_vrit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61a8bb40-5f37-4b58-8f37-8bbe9149704b/ponikevukepa.pdfIn PDF document text
    • http://kowefejarozop.epizy.com/batalegebab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc156c79-79a4-4603-88d3-a44aafebbdff/serato_dj_pro_free_download_full_version_32_bit.pdfIn PDF document text
    • http://xenilesaripesu.epizy.com/game_of_thrones_book_2_plot.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_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 5364 bytes
SHA-256: 707e3193baedf287fa47a16c627665236601679adaad8349c274c4f35cfe1404
font_01_sfnt_off0000f5d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D2 10400 bytes
SHA-256: e410d158c972e83f501a17673a6c5e88b059d3a12261a900e1254e0bcc61adb0

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