Malicious PDF — malware analysis report

Static analysis result for SHA-256 530fc03ea03f2bd3…

MALICIOUS

PDF

43.3 KB Created: 2020-10-07 14:23:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 882be5a77c55780ef4724d29bce30420 SHA-1: b40de64eed97548cfba0db068603d269dc1e7073 SHA-256: 530fc03ea03f2bd31db2d67b8b6f6ba4e20a111b69eb11e490869612b5d15e14
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://gettraff.ru/strik?keyword=atomic+bomber+full+9.+1+apk+free In PDF document text
    • http://files.banyantreesamui-cuisine.com/uploads/1/3/1/3/131380558/034a4f22484.pdfIn PDF document text
    • http://zaputed.madinaacademys.com/uploads/1/3/1/1/131163616/7b825.pdfIn PDF document text
    • http://pupotaju.pointofactionpdx.com/uploads/1/3/2/6/132696558/8719488.pdfIn PDF document text
    • http://files.alltiedupstocktie.com/uploads/1/3/0/7/130739349/8de103fa88e025a.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/1/0483/0137/5650/files/harry_potter_parseltongue_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8890/6902/files/el_conde_de_montecristo_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/heaven_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6470/4155/files/rav4_manual_transmission_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/reddit_bodyweight_fitness_equipment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4656/2713/files/noma_snowblower_manuals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307f4ce1-eb63-4cfe-8a5b-2ac006540f4f/tawiwokukezexalibebasotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a39dca-e26e-40d6-b15a-aaf37cc21766/51214515189.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_off00006437.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6437 5416 bytes
SHA-256: de19b02c60af327db1b995de33594430b0da2e97e1f329c18e79534fc6cca230
font_01_sfnt_off0000769e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769E 13240 bytes
SHA-256: 17fc1e416e8a4258f2ec959c3e45434e035ab94a3712e8f79db0dce22500d413