Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1068d5751cd94b6…

MALICIOUS

PDF

68.5 KB Created: 2021-02-13 11:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b64316cc7c66fc0d43e6375bcaf6560 SHA-1: 9e51f6d42fedc943263b2532cc352eaef933ad91 SHA-256: d1068d5751cd94b61b86dae7fbb3a9875811c71d29483951a8956fe3825bc3d7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=2013+world+history+staar+test+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420761/normal_601a55e6005fa.pdfIn PDF document text
    • http://gifozazupu.iblogger.org/balanced_body_studio_reformer_with_infinity_bar.pdfIn PDF document text
    • http://passive-income.ru/558519700763mv84.pdfIn PDF document text
    • http://13millions.store/patch_fr_batman_telltale58to5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470380/normal_6006fa356f5ee.pdfIn PDF document text
    • http://xozonline.ru/angular_6_formgroup_submitnvxqs.pdfIn PDF document text
    • http://sushibara.net/29147015099ghctx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476436/normal_6011c0dab4936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369763/normal_5fcb0a327dc54.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bogijexu/38327068068.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/mole_conversions_worksheet_11-_3.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/64215095318.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/sa_spelling_test.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/77464177104.pdfIn PDF document text
    • http://sopazanit.rf.gd/fagodozovufazenevipe.pdfIn PDF document text
    • http://sufelubunat.epizy.com/peinados_para_cabello_largo_hombres_formales.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/adding_and_subtracting_integers_worksheet_8th_grade.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_off0000ce99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE99 5500 bytes
SHA-256: 65e184ea12ebb211aa3540317b73ca34bc43bf9fa25643f2fa9f40bcc1213264
font_01_sfnt_off0000e15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15C 10476 bytes
SHA-256: 9f1adaa1ed63d55a50a7fc9fde6a900243bf503731a89c0b1fabf7112e5a3f11