Malicious PDF — malware analysis report

Static analysis result for SHA-256 c493d619a994a8a2…

MALICIOUS

PDF

68.4 KB Created: 2021-03-02 12:50:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 167c890ae39bea6db630f8d4aae526af SHA-1: 9909a87344dfa85feb32ec6da97034132fac547e SHA-256: c493d619a994a8a209a5aaf8493e1a3a1a728c8403ff4f8b23c8c71edef7077c
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://midufefew.ru/award?keyword=4+past+midnight+bandcamp PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388426/normal_6034cfb2570bd.pdfIn PDF document text
    • https://cdn.sqhk.co/simunenij/9ZIhhgc/putijisopoguzevaja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475727/normal_5ffe4183240b9.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/frEeWjg/jiwufuv.pdfIn PDF document text
    • https://cdn.sqhk.co/lejesapazud/jagiMhd/tropico_4_mission_16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476150/normal_5feb654c691ca.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jufowokedunod/anomaly_scan_report_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/expanding_logarithms_worksheet_chilimath.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/lazuxapiwejofegusugore.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/54427204144.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/confined_space_entry_permit_template_qld.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/peduvixufusud.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/coca_cola_femsa_philippines_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/badaga_latest_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/melhor_antivirus_gratis_para_android_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/java_7_windows_10_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/96040805927.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/18363986069.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c36a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36A 5052 bytes
SHA-256: 2c234c059246d4c8eab29a3d2dcf9594c7cf9959bf7ae32b2814930b8b6323a6
font_01_sfnt_off0000d459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD459 10004 bytes
SHA-256: 4d1657105853822da2cb5237f52576b309580eb07b0463693930e416ece41375
font_02_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176