Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e25805ff54bf36…

MALICIOUS

PDF

47.0 KB Created: 2020-10-05 21:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: acb9e2bb8070ea7456d674396a80f8e4 SHA-1: d82f87a8b7209e11b2e6b9a53a806cb13f66b13f SHA-256: 30e25805ff54bf36677387405e1842faff30c690c09054853fc8421f2aca44d7
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.link/pify?keyword=hey+arnold+harold+the+butcher In PDF document text
    • http://sujiwe.ausablevalleygrangefarmersmarkets.com/uploads/1/3/1/3/131380001/masilebu_gikasotinavox_rulor.pdfIn PDF document text
    • http://dapowera.bgrtampabay.com/uploads/1/3/0/7/130738531/4940505e0271ee.pdfIn PDF document text
    • http://buvet.southernnaturals.com/uploads/1/3/1/8/131871650/wetilabuletu-giziwamafobimip-vazotet.pdfIn PDF document text
    • https://site-1039133.mozfiles.com/files/1039133/didetovawogatubomago.pdfIn PDF document text
    • https://site-1038567.mozfiles.com/files/1038567/pirogarogosoroxejupudixav.pdfIn PDF document text
    • https://site-1039167.mozfiles.com/files/1039167/wopiluliwivogezexin.pdfIn PDF document text
    • https://site-1039210.mozfiles.com/files/1039210/76867345229.pdfIn PDF document text
    • https://site-1039925.mozfiles.com/files/1039925/totejukunivixolinuvi.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/1/0500/9231/0693/files/type_of_monitoring_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/0284/2264/files/47547616293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9776/2208/files/wow_classic_horde_enchanting_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8013/1759/files/intimate_connections.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_off00007907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7907 5052 bytes
SHA-256: 71b25397573b36b4a2f04e6955c53e235d247700af61c7cff34c31b4da3e7c96
font_01_sfnt_off00008a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A30 10976 bytes
SHA-256: b6e1e17c68c62b24ad7d713e4dcaf806ff508473e3584961e3916f9bf30f7328