Malicious PDF — malware analysis report

Static analysis result for SHA-256 f592add385bc2d8d…

MALICIOUS

PDF

39.9 KB Created: 2020-10-15 09:54:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1b00ab9546cd79271f6007c0d00394b4 SHA-1: e4c6bdd3a363d6f8666dcaae836e8f4197c5cad0 SHA-256: f592add385bc2d8d0056148615c7ecb1358d1752c6cb119e48159cdba9868e38
184 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.
  • 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/pify?keyword=canabalt+hd+apk+download In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/kegafaxuwanuzorigezo.pdfIn PDF document text
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/zefoxuzopiduzopif.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/f0e561e.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/8625127.pdfIn PDF document text
    • https://besiwalufeg.weebly.com/uploads/1/3/2/6/132696214/livetusova.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/povurixu-nenilizu-lixegat-kufuxuwuri.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/7187f37695a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f87317a7ca64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f8720f903ccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f8775a20d548.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f877c90c91a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f86f4e340924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8703b72f56c.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/1/0435/1832/8991/files/dansai_bunri_no_crime_edge_iwai.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/mess_dress_air_force.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9900/4314/files/formato_para_rotular_cd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/fijalewaredawiwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a1aba36-0d9b-4392-95cf-9d11872090d3/wukexemozawejixivekazomo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02f9890-3dc0-40e5-8411-a0dd0f9d5793/47823823741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8384d2c2-81f6-4345-b771-bfbd86a75540/zonogaga.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_off00005db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 4972 bytes
SHA-256: d276f7eed2f1a10f668ced40bb2b16bfaa16791d143f1bf68f87384bc2921eb0
font_01_sfnt_off00006ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA5 10436 bytes
SHA-256: 5ec545a3cc333d09579208d4fa441f6327f261b805244ca96ff2dc0cf9d82f4c

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