Malicious PDF — malware analysis report

Static analysis result for SHA-256 52cd02cc544a6236…

MALICIOUS

PDF

67.3 KB Created: 2021-02-24 14:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d50ca805e8a6aa6422034f489e31624c SHA-1: da952e95ae025bc80d9e485a90bc963c4b738d1f SHA-256: 52cd02cc544a6236892d38f2c465483553b8ca00df77acf964e3288e50b511ae
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wix?keyword=twisted+cooking+mama+unblocked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368969/normal_5fc882f178acb.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/metformin_xr_vs_srtm26a.pdfIn PDF document text
    • http://vipadminler.org/the_watchers_war_of_ages_lyricsv2v2k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425256/normal_5fcb3256d479d.pdfIn PDF document text
    • http://xtina.online/how_to_program_my_samsung_remote_to_my_soundbar6aq3i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370064/normal_5feda51c81960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413120/normal_5fe8a3fde48da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385021/normal_60152aa963a5d.pdfIn PDF document text
    • http://yesnutural.space/butijexovabifenovcchf.pdfIn PDF document text
    • http://nesobaka7.xyz/beckett_burner_nozzle_guideklf00.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/beiijjA/marble_machine_x_cad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464534/normal_602f9452dbcc3.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/bhdjfjd/cookie_cat_steven_universe_future.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366389/normal_5fe5d18728502.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/bokexizometun/milton_disinfecting_fluid_data_sheet.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_off0000bc5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC5B 5288 bytes
SHA-256: 1b03dc9f8bf46121b1bc2cc6ace1cfab59dc32048f152fd889190bb284e10cd4
font_01_sfnt_off0000ce46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE46 10880 bytes
SHA-256: 96803c1ab84e8f5e9643f9ae415de8087094ac5249cf66c29659d1768c09908a
font_02_sfnt_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c