Malicious PDF — malware analysis report

Static analysis result for SHA-256 577ea52cbe3b4729…

MALICIOUS

PDF

72.1 KB Created: 2021-02-25 10:23:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 038a8f357ce573166ed5876a69fd40b7 SHA-1: d9e9a01a8437e2e587b2250c1511d53861d3689e SHA-256: 577ea52cbe3b4729f0b59d81e79ff87982840e2d6991407a9c8160f6ddfe66cd
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=return+man+zombie+football PDF link annotation
    • https://cdn.sqhk.co/riraxizilob/gIhgkuD/merge_survival_zombie_hack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/u7jcjgi/pico_superhero_cartoon.pdfIn PDF document text
    • http://1eyvgo.xyz/nuvefopofevoxovi1ivi.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/jfcjbgc/ifttt_applets_alexa.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/kogdgh1/59775866275.pdfIn PDF document text
    • https://cdn.sqhk.co/vidikusupegu/xThbtxq/fezusonafejoreg.pdfIn PDF document text
    • http://filmera.ru/buccal_route_of_drug_administrationnrxq9.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/qigiegj/jurassic_richmond_raceway.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/he2Hjd7/91288724777.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471455/normal_5ff4c0c70b55e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477629/normal_5feeac8fae69c.pdfIn PDF document text
    • https://cdn.sqhk.co/dazenolaxuj/hegpdVL/brain_toys_for_dogs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409623/normal_5fdeca038ff6e.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/xupizewuxere/study_island_answers_for_meaning_and_tone.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/android_one_theme_for_mi_a3.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/balasubramaniam_songs_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/receivable_aging_report_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/berliner_platz_1_testheft.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_off0000d2e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E8 4816 bytes
SHA-256: 3eca4577816d76c2af39c2eb120a510e17bb749691a5c1e7f79200b69edc365e
font_01_sfnt_off0000e332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE332 9960 bytes
SHA-256: 08cb6ec10103f72dc9624dbb01b7f607066d6220263905ee5e43f00f018b5233
font_02_sfnt_off0001053b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333