Malicious PDF — malware analysis report

Static analysis result for SHA-256 603d54e620cfb9a2…

MALICIOUS

PDF

44.2 KB Created: 2020-10-05 07:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: ea9960c61a202cb63f83147e00020491 SHA-1: 5c8d7c4377c05cb32e65167a49c5e213701c72b3 SHA-256: 603d54e620cfb9a2876431b44e9b33c01362c00db0a9102cbc202eee95e24c60
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.club/pify?keyword=bajillion+dollar+properties+season+1 In PDF document text
    • https://site-1041489.mozfiles.com/files/1041489/99076120106.pdfIn PDF document text
    • https://site-1042593.mozfiles.com/files/1042593/11821716165.pdfIn PDF document text
    • https://site-1037897.mozfiles.com/files/1037897/nunizopevapokinorefu.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/taburegafopiw.pdfIn PDF document text
    • http://buziti.maxtallentconstruction.com/uploads/1/3/1/4/131410685/9f650c5aedea3.pdfIn PDF document text
    • http://wofipele.theexpatspeechie.com/uploads/1/3/1/3/131381241/rofisejeben-gogumefovot-zusuzuwolujenu-foromudovu.pdfIn PDF document text
    • http://tuneniki.alulawebsite.com/uploads/1/3/0/7/130739142/21eecafd7963.pdfIn PDF document text
    • http://julaji.heisenwholesale.com/uploads/1/3/0/8/130814328/9f17b4701c6.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/1/0432/7004/5864/files/vegatikuxugawuwuruzas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/6753/2198/files/geometry_dash_apk_latest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8247/6448/files/its_about_the_journey_not_the_destination_rick_and_morty.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4467/4979/files/sepemokipixovaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1296/3482/files/gikamifuwirivij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8939/8434/files/zuloligavapekimipegumile.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_off00006c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C79 5132 bytes
SHA-256: 43c6abe31d40bf470c4b4cd68d0cc66dd1c0484da86f54461781b57a1c753ddb
font_01_sfnt_off00007dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFF 11096 bytes
SHA-256: fcee4e73a69ff0002d4c400fd5e8eb4d5c3e1fb97b94a35eadd6d5b265331147

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