Malicious PDF — malware analysis report

Static analysis result for SHA-256 78a99a4e0e9f42c2…

MALICIOUS

PDF

76.1 KB Created: 2021-02-20 05:44:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f419c6ae0c72bfc724ba4d2f05a40174 SHA-1: 20bc082dbdbc7acd4319e60445801116d8d8abb4 SHA-256: 78a99a4e0e9f42c2c00dc608bd8be8c0b03414287f206ea3ad10ba81b2a4de59
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://baarspo.ru/aws?utm_term=what+is+a+present+perfect+tense+verb+with+examples PDF link annotation
    • http://feziweninepiv.iblogger.org/puramoruledinemejuzegoga.pdfIn PDF document text
    • http://fevozogu.iblogger.org/american_football_uniforms_usa.pdfIn PDF document text
    • http://zasosidimul.22web.org/critical_ops_apk_data_obb.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/hhajdnt/bunokiguwos.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/ijggijj/xadojabitubivaderudega.pdfIn PDF document text
    • https://cdn.sqhk.co/febenapox/e069vih/personal_safety_plan_template.pdfIn PDF document text
    • http://sixexom.iblogger.org/air_fryer_mondial_af_03_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutetokare.epizy.com/cd_cassiane_a_cura_playback.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/hazard_incident_and_injury_reporting_procedures.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/nof_osteoporosis_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/14513772225.pdfIn PDF document text
    • http://laxonuzuw.epizy.com/using_the_apostrophe_worksheet_answer_key.pdfIn PDF document text
    • http://kozusabupo.epizy.com/pubire.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/78167355460.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/ethiopian_protected_areas.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/itc_bookman_font_family_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/spider_man_ps4_trophy_guide_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/fobodizabijajilef.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_off0000ed2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2B 5628 bytes
SHA-256: 3489180810b965ef5002d7f823dc367bb8dea09e17144863a83f9bcca669ed7d
font_01_sfnt_off00010044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10044 10204 bytes
SHA-256: a21d17139034bbb8d8ad1e6f938573ccdae83a4e232b3e3f03eafd543c16d0f1