Malicious PDF — malware analysis report

Static analysis result for SHA-256 6acbffbef8f59004…

MALICIOUS

PDF

43.3 KB Created: 2020-10-02 06:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 20de4bfd798555922469586c101ec202 SHA-1: 00cb3bce11013d8a64a0fb589abbf0962f053815 SHA-256: 6acbffbef8f59004b91efb7909e475a032714515c6ddabac4c872480dbda8700
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/strik?keyword=analisis+oraciones+compuestas In PDF document text
    • https://site-1037096.mozfiles.com/files/1037096/mefedaxogola.pdfIn PDF document text
    • https://site-1036702.mozfiles.com/files/1036702/32132933693.pdfIn PDF document text
    • https://site-1036939.mozfiles.com/files/1036939/sanenowofinulo.pdfIn PDF document text
    • https://site-1036917.mozfiles.com/files/1036917/tedasadapikavili.pdfIn PDF document text
    • http://files.robbiesadventures.com/uploads/1/3/0/7/130738675/55324.pdfIn PDF document text
    • http://files.psnwrug.com/uploads/1/3/0/7/130739250/6216841.pdfIn PDF document text
    • http://gonil.talesoftomorrowcomics.com/uploads/1/3/1/3/131380284/4056481.pdfIn PDF document text
    • http://zuwud.aeem.com.au/uploads/1/3/0/7/130739284/tumevawovevibe.pdfIn PDF document text
    • http://kadaj.izalias.com/uploads/1/3/0/7/130775643/7408141.pdfIn PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/noseridesiri.pdfIn PDF document text
    • https://site-1036950.mozfiles.com/files/1036950/5233163291.pdfIn PDF document text
    • https://site-1037869.mozfiles.com/files/1037869/18547271837.pdfIn PDF document text
    • https://site-1036880.mozfiles.com/files/1036880/gopitudixezuxi.pdfIn PDF document text
    • https://site-1036981.mozfiles.com/files/1036981/pidazifi.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/1/0436/2931/4206/files/rorodononeluvujatuvej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0954/0257/files/gothic_style_bedroom_sets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4290/6007/files/vapajopajikuguxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2926/1219/files/san_elijo_campgrounds.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000698d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 5068 bytes
SHA-256: dea3564eff5893039e117b76b8f71902065123c3c8355a217b057ad3dbd55e21
font_01_sfnt_off00007ab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB2 11492 bytes
SHA-256: 6b1e50b6b4dfdd6bcb06ccef4aae61a285b5e805d0da82d1474188fc0e887dde

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