Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5c5bdf19264e2a5…

MALICIOUS

PDF

40.3 KB Created: 2020-10-27 18:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 33a2d359cb2943a988e36ab5c319157b SHA-1: a67349dd8230e178c8f7af95603791655a876de5 SHA-256: c5c5bdf19264e2a59c310c73b844f67260eb36cb94bde52e60d431f7f8d4c078
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://ttraff.me/pify?keyword=gourmet+basics+by+mikasa+4-tier+market+basket In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f8ca6673e2ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f87641b99368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366044/normal_5f877be877ca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5f90ffe9d3a59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f945a9d66afa.pdfIn PDF document text
    • https://xuxuroxipekawip.weebly.com/uploads/1/3/4/2/134265976/vabisafukakufixer.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/3739262.pdfIn PDF document text
    • https://vesalitekaso.weebly.com/uploads/1/3/4/3/134314643/71b66a23a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f8f145ed1910.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_5f884480be293.pdfIn PDF document text
    • https://kilesikawagex.weebly.com/uploads/1/3/4/3/134372597/6329886.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/linisimiwovane_mewomajudam_nojupogifuvuxef.pdfIn PDF document text
    • https://nidixinaxob.weebly.com/uploads/1/3/0/7/130739699/xuxedupif.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/4850617.pdfIn PDF document text
    • https://rirubonoji.weebly.com/uploads/1/3/4/5/134528367/xovuji.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/botivetiwa.pdfIn PDF document text
    • https://woxejisuwu.weebly.com/uploads/1/3/4/3/134322210/f810d6ac3fd7811.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/e6175a9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004e79.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004e79.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008349.bin)
    • 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 extracted file (font_00_sfnt_off00004e79.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E79 5148 bytes
SHA-256: f171fa743263bf45236166578abcc66a1a1ce12b23e2ada02c5a5930c7e8f567
font_01_sfnt_off00006019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6019 10252 bytes
SHA-256: 1d5d941ed8cedcdfe73069bc71322577376f29c96787a853194e039403913cfe
font_02_sfnt_off00008349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8349 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e