Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2c3f3ba1e5ff7c…

MALICIOUS

PDF

59.0 KB Created: 2020-11-08 06:54:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3d41abe6bd05ff7483e8403dcf3c9aca SHA-1: b1428cba7d3025dbd5fa145cd2f0d9420a97b3dd SHA-256: 9e2c3f3ba1e5ff7c4aa8b8e0d8e9a3cd5dfbbf411072e22f3ffebc7cd0a6ba19
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffking.ru/123?keyword=sims+4+have+girls In PDF document text
    • https://wojazaxu.weebly.com/uploads/1/3/4/5/134589930/likiw_xegujugejelo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407060/normal_5f922cb191be5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pirosisob/xumiruzoga.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/revuniretef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de3eb622-02bd-443e-ae57-61c466ec624b/jadakiss_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/sonomarowesuzoroj.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/trim_fit_keto_capsules.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/rampage_2018_full_movie_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/986b849f-0a5d-459b-91e9-41de87492aa5/od_nua_level_7.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/maplestory_papulatus_prequest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/fukagitisokujuwap.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/17822143440.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F72 4844 bytes
SHA-256: 63845da38173c5d74cf7b08d14b155131143f45b6b0e8f33504256e1c681fad0
font_01_sfnt_off00009fd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD4 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_02_sfnt_off0000ab37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB37 11008 bytes
SHA-256: 9e03dc3fa196a260ab0894f97787c3593940c422c404d4bf3b26038f7206a065
font_03_sfnt_off0000d0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CE 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333