Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e0552e714ecd3c…

MALICIOUS

PDF

37.2 KB Created: 2020-10-11 19:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-19
MD5: 8f4de47702813b4c77fd57f31d3c068f SHA-1: c3f367fa470272036acf3966f182dd42de4b25a0 SHA-256: f0e0552e714ecd3c2d18d63ed4ec15eed9d863165290674fb897b4a20f4e559d
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.link/pify?keyword=par+q+pdf+2020 In PDF document text
    • http://files.camppepper.com/uploads/1/3/2/3/132302913/1217584.pdfIn PDF document text
    • http://files.tribalsoulmaps.com/uploads/1/3/1/8/131856907/e4c79.pdfIn PDF document text
    • http://files.gagroundcare.com/uploads/1/3/0/7/130738720/pubekuwugize-powisazere.pdfIn PDF document text
    • http://files.episcopalyouthcamp.org/uploads/1/3/1/4/131408798/narukobixe.pdfIn PDF document text
    • http://files.rinfang.com/uploads/1/3/1/3/131384249/wutik.pdfIn PDF document text
    • http://mowopesu.wingateroadrunners.com/uploads/1/3/0/7/130740257/5352394.pdfIn PDF document text
    • http://nivax.holycrossparishet.org/uploads/1/3/1/6/131637814/timira_numokoxolixo_sozex_gakotowizijiro.pdfIn PDF document text
    • https://site-1044192.mozfiles.com/files/1044192/85366980017.pdfIn PDF document text
    • https://site-1037074.mozfiles.com/files/1037074/xexaguxe.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/1/0432/2426/8968/files/12480804842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/6820/3430/files/mark_twain_style_of_humor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/88424243605.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_off000053ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CE 5228 bytes
SHA-256: 4f784774ce8803b14da7aa410667a57d49b182aba0266ac10713416602764c90
font_01_sfnt_off0000659d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659D 10380 bytes
SHA-256: c4241596c24923f08b2519ec92ec25658309ca635650761d446059084e538adc