Malicious PDF — malware analysis report

Static analysis result for SHA-256 220484102a903a20…

MALICIOUS

PDF

70.0 KB Created: 2021-02-18 15:10:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9bd093ea65f8c0746360fa709d57e5f5 SHA-1: 94e2b77efc6949893829acb37877298556e5a340 SHA-256: 220484102a903a20f653dbfbd07c0a3629d1ec1223023b0fcdf42d16a01a17ae
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=plt+headphones+backbeat+fit+2100 PDF link annotation
    • http://complerbnp.com/164957925nl73q.pdfIn PDF document text
    • https://worowisirokisid.weebly.com/uploads/1/3/4/8/134856274/fatuwu_kaluj_wepetosolu.pdfIn PDF document text
    • http://fitness1.space/33756707967srbxx.pdfIn PDF document text
    • https://laxatutokowo.weebly.com/uploads/1/3/5/3/135387201/5383727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_60203a66826de.pdfIn PDF document text
    • http://freedate18.xyz/priscilla_shirer_fervent_downloaduwubs.pdfIn PDF document text
    • http://copyrighthelpbusiness.net/lil_alchemist_best_bronze_combo_cards2bs8s.pdfIn PDF document text
    • http://specialsale.info/927388036442xlwb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417670/normal_5ffed40488eed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372378/normal_6007ed33eb358.pdfIn PDF document text
    • https://kewojuposadut.weebly.com/uploads/1/3/4/3/134374438/c5ec6f1662b8.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/joterige/scrabble_word_finder_game.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/ritasukamawafid.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/91906144851.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/camera_fv-_5_app_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_off0000d362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD362 5676 bytes
SHA-256: 49c4f6ac39acc303b4cd3f20b3f5d8124fd6eb471747750668df36ea11be5b84
font_01_sfnt_off0000e6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B3 10804 bytes
SHA-256: d23cdd65862baef60de0a8c62278fb66967a156c4496858b9396e67a4079379c