Malicious PDF — malware analysis report

Static analysis result for SHA-256 170a21f9aaae88c2…

MALICIOUS

PDF

36.7 KB Created: 2020-10-16 00:30:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 21b130f5b147ce60bab9f4be96199f8a SHA-1: 7b7f8f74ee7d27e951c23cea07d3b91d1cbb6abc SHA-256: 170a21f9aaae88c2c555cd30f35d203cbe2ec6c50aa43b8fc221a920d6a70f2c
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/123?keyword=gbc+triad+laminator+a3+manual In PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/7800213.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/sasetagamiz.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/7420578.pdfIn PDF document text
    • https://site-1041075.mozfiles.com/files/1041075/19762813752.pdfIn PDF document text
    • https://site-1048528.mozfiles.com/files/1048528/android_bound_service_not_starting_service.pdfIn PDF document text
    • https://site-1038684.mozfiles.com/files/1038684/makisitaligu.pdfIn PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/817bc03f.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
    • https://zuxuzesis.weebly.com/uploads/1/3/1/4/131438019/polar_romug.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/685eb9c0-83c0-458b-a38f-e16b3e211339/serinivirimukiferobipav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82e203fa-619b-446c-9ae0-edde100f0b78/jabojinoleleviwupuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeb2f880-37db-4dd8-8514-493fa8f4c972/ribolabovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d17d5b2a-738c-4f00-9aa5-ea58bb1bb5b3/35216317295.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8241b644-63fa-45bf-88e9-940c9f78daf1/tujazusedoguxumumaluxij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2823/9768/files/20647811174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4100/4954/files/fevifut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/toloxigukilujiwav.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5294 5244 bytes
SHA-256: 396a39ab5bd365102c3fca9875aa07ca2de6491efdff57a33b93c0d9de19b556
font_01_sfnt_off00006450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6450 9808 bytes
SHA-256: e1593c14e6dad5e6e782f93ab8448e73a003f3e75c9d8408347e3a7cb7512560

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