Malicious PDF — malware analysis report

Static analysis result for SHA-256 411405a1e23d4474…

MALICIOUS

PDF

73.2 KB Created: 2021-03-16 22:36:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 20129bf6c97b0de2dd29d381f74ec8e2 SHA-1: 5e0223ae96af0774f08a7a6a0cc194d4c33e1931 SHA-256: 411405a1e23d44746101ac8d9e1409930afb0e19190ab6ba0cc14170753435b7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://nipisod.ru/award?keyword=hunger+games+english+book+pdf PDF link annotation
    • http://zutolewe.mywebcommunity.org/39709130441.pdfIn PDF document text
    • http://pukujadud.getenjoyment.net/16873495515.pdfIn PDF document text
    • http://frut-tree.site/adverse_childhood_experience_ace_questionnairemzuxn.pdfIn PDF document text
    • http://kerufeki.22web.org/zubosevija.pdfIn PDF document text
    • http://flipping-car.online/ge_xl44_gas_range_specificationsf7agm.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/rujabepifar/simple_future_tense_spanish_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4482b1b4-4744-4c8b-83d9-9f7b9b9c0de0/braun_wheelchair_lift_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/power_pressure_cooker_xl_10_qt_accessories.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/74389339212.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/dolalifafatevesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6f79610-41b1-43f7-8f8a-8f427a392dc9/14095519135.pdfIn PDF document text
    • http://gejinafanijeju.epizy.com/what_is_a_beginner_chess_rating.pdfIn PDF document text
    • http://gulizut.epizy.com/19065210762.pdfIn PDF document text
    • http://xikepidefam.epizy.com/android_mobile_app_templates_free.pdfIn PDF document text
    • http://tiwadelir.rf.gd/all_american_925_pressure_canner_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0ba6566-2968-4406-ba4e-018a3500bf9e/59882856413.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/brother_dcp-_l2520dw_drivers.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/p99_bard_leveling_guide.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_off0000e11e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE11E 5620 bytes
SHA-256: d40134cedee4e0ab451e31809118c39f3130af2ff877796fa44d195ba1daa8c3
font_01_sfnt_off0000f409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF409 10504 bytes
SHA-256: b3568e9266add6e7b3fbed0d76d17aa3b25911807df890d9fa0dc0df09f3c44a