Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c34eb4d01eef4d…

MALICIOUS

PDF

188.2 KB Created: 2021-03-29 23:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1e3042f71f0fd4f7c1f00b7e54e03e67 SHA-1: 6e30e536928c35da155202f0b62d76e130cacf41 SHA-256: e9c34eb4d01eef4d3aea855a0279645344f02d231a3697630bb5c0618fd8bd02
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 0.9971

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://mezovuduw.ru/wix?keyword=map+of+the+crusades+holy+land PDF link annotation
    • http://wedipum.mygamesonline.org/creative_cv_format.pdfIn PDF document text
    • http://nyvelsets.online/zufarovaooe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461229/normal_600bd6ffb3780.pdfIn PDF document text
    • http://mabizevo.22web.org/94375152935.pdfIn PDF document text
    • http://monongzhlh.space/61147945385qmfuu.pdfIn PDF document text
    • http://arfeshome.com/naladagupalaxaformgb72.pdfIn PDF document text
    • http://geekcods.com/basic_function_of_social_work0g5bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478928/normal_604d9829b518d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446491/normal_5fd8e6b063b1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379970/normal_604ba0ec0ff74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_60480cd8c35ad.pdfIn PDF document text
    • http://ruregere.sportsontheweb.net/the_art_of_reading_body_language.pdfIn PDF document text
    • http://online-bestshop.xyz/rarovafirotamigarofezvr6b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dozanokipe.epizy.com/brochure_application_free.pdfIn PDF document text
    • http://mogazijanadoro.rf.gd/logo_quiz_answers_level_3_logo_11.pdfIn PDF document text
    • http://jasulogitese.rf.gd/54993108106.pdfIn PDF document text
    • http://biwodonugawodil.rf.gd/formacion_river_vs_belgrano_promocion_2011.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/ingersoll_rand_ssr-ep_15_u.pdfIn PDF document text
    • http://wutesejib.onlinewebshop.net/how_old_was_bruce_lees_son_when_he_died.pdfIn PDF document text
    • http://ridexinawaje.epizy.com/the_half_has_never_been_told_book_review.pdfIn PDF document text
    • http://deravamosu.rf.gd/crime_report_form_listening_test_1_answers.pdfIn PDF document text
    • http://zujamovosologu.rf.gd/89948346698.pdfIn PDF document text
    • http://zusozokag.epizy.com/kinogijadesapefi.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002922e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2922E 5352 bytes
SHA-256: b11ef3bf5d7a123a7ebaa5e1e0b40f54ec78896c61c79dcf1a535f4d3213c5ef
font_01_sfnt_off0002a473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A473 12352 bytes
SHA-256: 7371b1391bbfb6c32fd786b56ea3330af081f5886c5ecc972e921f7a6626f51c
font_02_sfnt_off0002cbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CBAF 16168 bytes
SHA-256: 3e181066e62012a4a594e45932dfb6365c9877484433bfec5a7aa6637a7a1742

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