Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b769f237cfba95d…

MALICIOUS

PDF

36.8 KB Created: 2020-10-31 11:21:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 07b9764bb3fab5420da996c2327bff11 SHA-1: 15c2641c29e375f84e46c97c3fda88ee176af4f8 SHA-256: 1b769f237cfba95dba7b48fb4cfd03d2892bbd33a12ce196366268d1ea377208
132 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.me/123?keyword=into+the+still+blue+pdf In PDF document text
    • https://zagukosi.weebly.com/uploads/1/3/4/3/134314994/tamogijepuzi.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/3609255.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/kikajalibi_tiguril_jasagofujus_jebalevobiji.pdfIn PDF document text
    • https://xukaxikerebata.weebly.com/uploads/1/3/4/0/134042698/zalamu.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/6497588.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/7566/3540/files/jay_z_blueprint_3_album_download.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/legend_of_zelda_leather_wallet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e00e97b8-8fb2-492e-bf5d-2d532f2975bd/28641607163.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/932e59b5-ca55-41b7-bd58-477bf0615b74/13820635541.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunoje/2016_toyota_4runner_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/bhagavad_gita_indonesia.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_off0000543b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x543B 4900 bytes
SHA-256: 346350c6f4dfd0248b025c3bf06a71c15d62324eba6573b21c87697434bd4316
font_01_sfnt_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 10020 bytes
SHA-256: a12bb0b09f14da7b8d452439b41bf735a96825c6c4022f19fe887103970e6127