Malicious PDF — malware analysis report

Static analysis result for SHA-256 172af3b9f942135a…

MALICIOUS

PDF

72.4 KB Created: 2021-02-16 10:47:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 68babea9f71a08f843464cbc6c88aff2 SHA-1: c9533d6258733f1214d08066431f9e2f7899eada SHA-256: 172af3b9f942135a5dd886d6d919d72f50d02e3bad4d2876b2b46e6d4d19a21b
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=sean+mackin+costco PDF link annotation
    • http://topshops.website/weekly_math_homework_answers_6th_gradeseb6t.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvazuginu/hdmgfQZ/need_for_speed_no_limits_apk_obb_offline.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423443/normal_5ffae7ced998b.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/2hbhfor/6113334464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381748/normal_5ff61993c632f.pdfIn PDF document text
    • http://50offstore.info/mimizay6a9r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_600ba6881a731.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/idGjeha/glacier_national_park_hiking_trails_map.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/jhUCIuE/mage_defense_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_60146af13fd12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469849/normal_60098914bebf1.pdfIn PDF document text
    • https://cdn.sqhk.co/doginifa/fNtbVjf/read_along_audio_books_for_1st_graders.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486763/normal_60144b605fa57.pdfIn PDF document text
    • http://yoga-italy.space/fevabelobvlwj1.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/vutame/37964469422.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/guide_impot_ligne_437.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_off0000d3c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C4 4772 bytes
SHA-256: 239e300c8f58c482b8ff7dce3a6e98f6b305bbc54c7f5e884b32b9e63dabd1ed
font_01_sfnt_off0000e3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D8 10252 bytes
SHA-256: 11da0a28561c23c0b8a36373a08d337203df189a9d951f94506e47d95622f15e
font_02_sfnt_off00010701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10701 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361