Malicious PDF — malware analysis report

Static analysis result for SHA-256 606977ecc14a2ffe…

MALICIOUS

PDF

65.9 KB Created: 2020-12-19 19:39:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7ad7c7ae2b573aa11c7af72416f237d0 SHA-1: aeaff14286e77c5361d8e74175e36ef69be038e1 SHA-256: 606977ecc14a2ffecf4b4d6109fe3ac22a9edb2605661c000e2345c583cf64f6
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/square?utm_term=bakra+eid+mubarak+video In PDF document text
    • https://movulejovem.weebly.com/uploads/1/3/4/4/134470355/704b928fb.pdfIn PDF document text
    • https://raboxodibol.weebly.com/uploads/1/3/4/0/134096122/4752816.pdfIn PDF document text
    • https://tufelovewojamex.weebly.com/uploads/1/3/4/3/134331554/pomofimodokobod.pdfIn PDF document text
    • https://biwezufum.weebly.com/uploads/1/3/4/8/134872286/1261882.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/009f4451-d136-4e5a-b39e-baff6e45eadf/roku_low_power_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24b1803-10f1-4c56-9c63-6394b09a13db/my_god_is_the_sun_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23920e5c-35bb-4df1-a65b-c055b57c5ee9/winorotusozeto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e86ec0a1d2b4e581618/1606225543506/myrtle_beach_mugshots_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5700ff7cf8c754049529a/t/5fd18b62ce71ee580fa3eaf0/1607568228130/wovisulavesukulexiv.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/ntr_baadshah_movie_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a98bcd-6372-4cd0-9dbc-6459edd9cc10/93993646304.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/vadezopusanuxewikizik.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/learn_android_app_development_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1328493-7955-428c-a01d-6676b6d3a730/sinudozinot.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/amazing_spider_man_2_apk_app_mirror.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_off0000c5f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F9 5072 bytes
SHA-256: 1aea41ad82d4916868a4f26ee99ac3b50c25379a9483fc0e2c3f92a9de7fb757
font_01_sfnt_off0000d72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72F 10620 bytes
SHA-256: 336992677be1e09e9ee9d87d683f64c16cc280f25ba8127766e2c2538f57fd1c