Malicious PDF — malware analysis report

Static analysis result for SHA-256 68da3420cdcc9351…

MALICIOUS

PDF

39.0 KB Created: 2020-10-13 13:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7d403b7cf480c5aa2a326ce9dea77b26 SHA-1: 9930fb3dae5a9393869eb24ecb74508bae3d8d15 SHA-256: 68da3420cdcc9351c8b7a59b40997b9173429027626ba28a5ec349ccd0a3c692
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/strik?keyword=manuale+registratore+di+cassa+3i+rt-30 In PDF document text
    • https://site-1038674.mozfiles.com/files/1038674/34914108282.pdfIn PDF document text
    • https://site-1036775.mozfiles.com/files/1036775/63108405623.pdfIn PDF document text
    • https://site-1044064.mozfiles.com/files/1044064/62755047857.pdfIn PDF document text
    • https://site-1036767.mozfiles.com/files/1036767/lelixisovigawuw.pdfIn PDF document text
    • https://site-1043698.mozfiles.com/files/1043698/42711147790.pdfIn PDF document text
    • https://site-1041188.mozfiles.com/files/1041188/tivodapapera.pdfIn PDF document text
    • https://site-1039175.mozfiles.com/files/1039175/48477229209.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/sijuwoxujupid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0493/9880/8743/files/55542565429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/ggplot2_cheat_sheet_python.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C9B 5332 bytes
SHA-256: aa6cf39ccd7d04e67ae5ebd0c18fae921c4e9dd78ea482796881c50edcfb1aff
font_01_sfnt_off00005ec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EC3 10216 bytes
SHA-256: d9715c7a9d050d0d87ef33b221e418700cbb9683baa7a0367b8ae7dc449dbd44
font_02_sfnt_off000080f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F3 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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