Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbbc6c0bd0ece37f…

MALICIOUS

PDF

42.9 KB Created: 2020-10-02 12:08:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bb4f727c998bc02c9ac88dc2175d7ec5 SHA-1: b8d001dfb19137aa99568a7f90ad713385130ca2 SHA-256: bbbc6c0bd0ece37f71eeb127df5290a6abf66ae2df0b77ed1f631ce993cef09b
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://cctraff.ru/pify?keyword=learning+is+fun In PDF document text
    • https://site-1036861.mozfiles.com/files/1036861/gegilidepofawuzifilipepu.pdfIn PDF document text
    • https://site-1038815.mozfiles.com/files/1038815/jofuvisugurirividigurunad.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/favexofiboxako.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/43436613941.pdfIn PDF document text
    • https://site-1036629.mozfiles.com/files/1036629/13603218256.pdfIn PDF document text
    • http://files.morganimports.com/uploads/1/3/1/4/131438171/1435362.pdfIn PDF document text
    • http://fadijiniz.frankmshih.com/uploads/1/3/2/7/132740606/8461628.pdfIn PDF document text
    • http://files.risingstartoyfoxterriers.com/uploads/1/3/1/4/131437655/1886345.pdfIn PDF document text
    • http://files.meganmurphy.co.nz/uploads/1/3/0/8/130815311/8530514.pdfIn PDF document text
    • http://files.heartofasiatravels.com/uploads/1/3/2/6/132695513/tijazuratome_sadarezekizeta_lazonunegiwabu.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/aa3531d4-b9af-4eb8-87a3-4dfc67f7788d/ludado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/191052b4-5683-418f-998a-ddd251769733/5225714688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db343f5f-a157-4d08-8bc7-e2e0838a9809/leniwufufax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20736687-3724-4f62-acd8-9d5702331e61/fegoxibedenulabax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/showbox_4.96_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6002/7541/files/zujapigoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7859/9066/files/nba2k15_xbox_360_my_career.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_off00006b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B33 4844 bytes
SHA-256: 5589fe8959a3a65c1bdbc011b3ba60fe9f16c91f5ac9704f4a669fb6b3fd7a27
font_01_sfnt_off00007bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC1 10232 bytes
SHA-256: 13de5e4a2e5fd9a61a8a7058af6aafb64b9ece682facc4a91ff0d2175908b034

Open this report in the interactive analyzer, or submit your own file for analysis.