Malicious PDF — malware analysis report

Static analysis result for SHA-256 131743619f763c86…

MALICIOUS

PDF

38.1 KB Created: 2020-08-16 20:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2a878e370051eb2de876bc5a543f08df SHA-1: 22f013e5002218cdd83af2f690851a10d7071ff5 SHA-256: 131743619f763c869c24668413e9e92153e07462567af685b808837c6686c4f1
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.cc/pify?keyword=cebuana+song+free In PDF document text
    • http://files.pyramidcafeshop.com/uploads/1/3/1/3/131398533/a2f652.pdfIn PDF document text
    • http://files.nvarealestateresource.com/uploads/1/3/0/7/130738823/5a54a45142.pdfIn PDF document text
    • http://files.anomisu.com/uploads/1/3/2/3/132302913/lasefekufixokuk-komagexaruberos-faroxogoka-sokimid.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/1/0435/4398/6330/files/pabowiwekufobesalit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6285/1749/files/lexavodaminoturadeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/35346558955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4412/3303/files/bilaspur_university_admit_card_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/pusijokipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/28325147158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7344/4767/files/ridabububimogenuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0657/4238/files/28632662919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/mathematics_for_economics_pemberton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/vofer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8123/files/73234746074.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_off00004ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA1 4948 bytes
SHA-256: 2e090795c1ebb42d7434707c6f95df7f89171f8fbdad99d37215e3fd82358e57
font_01_sfnt_off00005f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 13664 bytes
SHA-256: 30f4b80d8756c3343b89884cdcc99d6eefadd8431f50efddac5447a1786e50cd

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