Malicious PDF — malware analysis report

Static analysis result for SHA-256 87ad3e779070bce1…

MALICIOUS

PDF

69.1 KB Created: 2021-02-22 21:40:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cb5ff7cdcfaa7a58c25b89307ff55ad1 SHA-1: 5e7089af5a7996eb4f3578d9ebc7b37e4adcd411 SHA-256: 87ad3e779070bce16b2b3945fdda9cc211176f28571c1ddb11ab996e64563267
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://baarspo.ru/wix?keyword=blank+map+of+southwest+asia+middle+east PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4485714/normal_5fde929d89f6d.pdfIn PDF document text
    • https://cdn.sqhk.co/sozodumupof/EnibIhc/nower.pdfIn PDF document text
    • https://cdn.sqhk.co/rowavarop/hbtijhh/87001106419.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/M4X0fji/retrovirus_vs_retrotransposon.pdfIn PDF document text
    • https://cdn.sqhk.co/bapuwanuvadi/fihccjh/75871389775.pdfIn PDF document text
    • https://cdn.sqhk.co/daluzowinasu/rxgfDR7/8227253556.pdfIn PDF document text
    • https://cdn.sqhk.co/vimanagadu/YsFOfxN/guxesa.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/toniseligiwuzux/blumatica_corrispettivi_op.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/piano_sheet_music_crocodile_rock.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/45378005347.pdfIn PDF document text
    • http://garaloxuvenuwin.epizy.com/66132874054.pdfIn PDF document text
    • http://jikebejilogotum.rf.gd/zoneruxagiko.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/betirunala.pdfIn PDF document text
    • http://rofosonovoze.rf.gd/kjv_bible_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/android_vpn_apps_not_working.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_off0000d2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C0 5392 bytes
SHA-256: b681df5a3fd02e0c2a6fa491d3262708a5b64c59ac3c4d253a3be7eb534f5243
font_01_sfnt_off0000e509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 9964 bytes
SHA-256: fe0a3b1647eab8b74937c2c7a893cf73da5afab33595300add02c22d09194e43