Malicious PDF — malware analysis report

Static analysis result for SHA-256 7763af55fefecef1…

MALICIOUS

PDF

71.1 KB Created: 2021-02-22 08:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ebdb821b28e5c49d242cc6b37d50975f SHA-1: 74e846bdd7cf534d4438ad7c65eca3c12a56135e SHA-256: 7763af55fefecef1a386942f231fee29285ecd79047efce0f9edbb3d1b68c03b
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://jacksth.ru/123?utm_term=why+is+my+samsung+fridge+ice+maker+freezing+up PDF link annotation
    • https://roguraluvi.weebly.com/uploads/1/3/0/7/130776180/giferokixobanak-mopumeb.pdfIn PDF document text
    • https://cdn.sqhk.co/melipetoluf/WvikAjb/stalin_malhotra_physics_class_9_free_download.pdfIn PDF document text
    • http://lovasosirukes.iblogger.org/63845883641.pdfIn PDF document text
    • http://raisinshq.club/kuletakiwi5fwdo.pdfIn PDF document text
    • https://cdn.sqhk.co/zoluxoni/WhaVIkW/32072862898.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/StpgeVQ/93477608248.pdfIn PDF document text
    • https://kevavabine.weebly.com/uploads/1/3/1/4/131406582/dovude.pdfIn PDF document text
    • https://fifofisepag.weebly.com/uploads/1/3/5/9/135985139/mikukuwekubo.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/r8giagd/goxozubuxoza.pdfIn PDF document text
    • http://sokfresh.fun/apk_drone_view_official_mobile_legend9hche.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/lanubili/effexor_dose_forms.pdfIn PDF document text
    • http://lelupiborojez.epizy.com/wakexuruletosu.pdfIn PDF document text
    • http://jusulev.epizy.com/is_per_capita_income.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/41197753375.pdfIn PDF document text
    • http://jibovofafef.epizy.com/singular_and_plural_nouns_worksheets_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/att_uverse_remote_manual_codes.pdfIn PDF document text
    • http://vuzejonesiji.epizy.com/pml_chord_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/narevubobiforajinamutidiz.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_off0000d893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD893 5764 bytes
SHA-256: a813976f98f331714d26e9dbdf4ff01aff09f3da120708631c9505b5aff8f468
font_01_sfnt_off0000ec34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC34 10264 bytes
SHA-256: a3e28f943b1cc5bac7632f5c231a87a7b11ae6a4bfa8549b3cb57168a75a36e4