Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a4174bcd1c28371…

MALICIOUS

PDF

71.4 KB Created: 2021-02-23 01:38:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb26b1b595ddb7fc384240b823e1423f SHA-1: eee2b977779f57889d7acb8551fecf1cda6953a1 SHA-256: 1a4174bcd1c283716f18651e872e5fc4c4cef5c3181107438d9284954b4e18b5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=meilleurs+voeux+2020+bonne+ann%25C3%25A9e PDF link annotation
    • http://bukipanugub.iblogger.org/82867717623.pdfIn PDF document text
    • http://turiwovezaz.iblogger.org/can_you_exercise_with_piriformis_syndrome.pdfIn PDF document text
    • http://zokirip.iblogger.org/31458431334.pdfIn PDF document text
    • https://tidatulo.weebly.com/uploads/1/3/2/8/132815220/83f50592984ca.pdfIn PDF document text
    • http://makululi.iblogger.org/samsung_blu_ray_bd_f5700_manual.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/wizedumi/champcash_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/beautiful_car_background_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/bapexafixuxupoza.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/52415316038.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/bowstring_lake_mn_ice_fishing_report.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/43760616727.pdfIn PDF document text
    • http://vukevigax.epizy.com/doodle_god_blitz_hd_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/angry_birds_2_hd_movie.pdfIn PDF document text
    • http://gapevizatijaba.epizy.com/what_is_the_difference_between_bosch_ascenta_and_300_series.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/41122432616.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/hoi4_japan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/bootstrap_form_row_color.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/cbse_net_computer_science_questions_and_answers.pdfIn PDF document text
    • http://jujewejono.epizy.com/94529631113.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_off0000d6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C5 5368 bytes
SHA-256: d51a1b79918779aa19df3f2073a6ed348b6ab2711258f26444ad350bc0dcea71
font_01_sfnt_off0000e8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DE 11928 bytes
SHA-256: f29bb6af31478f1f8d86c91ba2a59737e9893e828cb0d354008798a4a775e0e9