Malicious PDF — malware analysis report

Static analysis result for SHA-256 a291f695e0ac1251…

MALICIOUS

PDF

74.0 KB Created: 2021-02-25 13:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab4f34ca9d9f3c0f1d4c3dc1f084d2b4 SHA-1: ecd5551e90ccf4d667deac5a14927586473028fe SHA-256: a291f695e0ac125150f29675facf4d8fe23ad0d1436d4a038467cbd21a231a30
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://leonvi.ru/123?utm_term=how+to+volunteer+in+schools PDF link annotation
    • https://cdn.sqhk.co/besogevipadi/jdDDfch/food_name_generator_business.pdfIn PDF document text
    • https://cdn.sqhk.co/susononuz/EEiaijL/46405026916.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/ieggic1/carrom_3d_game_for_pc_online.pdfIn PDF document text
    • http://feedbacrnz.space/chesapeake_bay_bridge_traffic_report_real_timeb3pr8.pdfIn PDF document text
    • http://ludshop.xyz/92857597728fsaxm.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/9jfPpPp/international_calls_from_us_to_dominican_republic.pdfIn PDF document text
    • http://s7hmus.org/vevumudawororatupf.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/gapivegek/delonghi_espresso_coffee_maker_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/did_sharp_objects_get_cancelled.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/98612662.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/89650200917.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/medical_applications_of_laser.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/68064410809.pdfIn PDF document text
    • http://tosogaxaf.rf.gd/94295848586.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bhojpuri_bhakti_dj_ringtone.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_off0000e5d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D9 4788 bytes
SHA-256: 11bbcd37601cec9ed00f3ffcb7dbd41940301bdaf19178b3fb17b1db05d09e0d
font_01_sfnt_off0000f632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF632 10860 bytes
SHA-256: 9968c1ecd05739ae3683861112c60e5082bdd73f89bfcef032a42b36ec48b4d9