Malicious PDF — malware analysis report

Static analysis result for SHA-256 678f7dc3850c0a17…

MALICIOUS

PDF

71.5 KB Created: 2021-02-25 10:34:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b6490aa52232911f2a8552872990ab54 SHA-1: 58d95ab0fcd1106053cfe1a8fe22c266d0ec004b SHA-256: 678f7dc3850c0a17b19b8f2c7659078662cc702aeae356d058ee0ba11b49f1e1
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://druttle.ru/award?keyword=what+does+the+kjv+bible+say+about+capital+punishment PDF link annotation
    • http://kavelux.22web.org/99231607138.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470696/normal_5fce80e2bdb64.pdfIn PDF document text
    • http://allfreebets.ru/chopsticks_sheet_music_musescore3ndya.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381082/normal_5fc7a8f51ab06.pdfIn PDF document text
    • http://mestorating.ru/cisco_catalyst_2950_pricet1vmv.pdfIn PDF document text
    • http://medtechnika1.ru/clicker_klik2u_wayne_daltonef0nw.pdfIn PDF document text
    • http://greyfruit.space/77624446810gpgm5.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/timeziso/75500951965.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/dawolidalipu.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/15682343208.pdfIn PDF document text
    • http://zubutavobidu.rf.gd/dirupekumorerebolefegif.pdfIn PDF document text
    • http://nanaxaj.rf.gd/les_fleurs_du_mal_resume.pdfIn PDF document text
    • http://bolutiso.epizy.com/battle_brothers_modding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/73548406873.pdfIn PDF document text
    • http://rodobokojezaga.epizy.com/indefinite_admittance_matrix.pdfIn PDF document text
    • http://gidazajizi.rf.gd/battleground_craft_survival_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/lightroom_presets_free_for_android.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_off0000dacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACB 5672 bytes
SHA-256: 4c766d830c833f1cb484752bd40d11a4e78b2c3e3870cfed3c1568b010cfde63
font_01_sfnt_off0000ee0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0B 10208 bytes
SHA-256: ba168a26b4ee1f15342ccb1e6e3d4a626eabd5e9c5ad2e867909400b9fc0ac29