Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed6b46cbc2fc8a3f…

MALICIOUS

PDF

53.6 KB Created: 2020-10-26 08:35:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 1bea212907040d7646c111845e312e7c SHA-1: feede56a9111c3b291acd2bba0b1b3371483cee2 SHA-256: ed6b46cbc2fc8a3fd74961d7faaaf23e18fc712e8ea40765a6583fb34e2b49a7
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.me/123?keyword=timing+chain+guides+bmw+540i In PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/gigufoteworakef-bezari.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/afa936094.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/felikisixiga.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/2096477.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/944560.pdfIn PDF document text
    • https://munazuzane.weebly.com/uploads/1/3/4/3/134350045/forisafelaje.pdfIn PDF document text
    • https://jerewetazawupej.weebly.com/uploads/1/3/4/3/134384555/8077535.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/kikudedoji.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008d20.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008d20.bin)
    • https://cdn.shopify.com/s/files/1/0478/1103/5295/files/bart_d_ehrman_new_testament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8307/0629/files/jurnal_strongyloides_stercoralis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9440/4008/files/kinalofegawomadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4587/7922/files/jean_keating.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/3685/2391/files/fufisaxanewituzuren.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/71256199104.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/aquarium_fish_diseases.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/duduf.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/25017934855.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/vikijumufalagovijomu.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/7671069732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2661/9287/files/wipexurarefewavagudijuru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8140/9713/files/psychological_assessment_report_writing.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 extracted file (font_00_sfnt_off00008d20.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D20 5760 bytes
SHA-256: 693ac7fddbb952dbe6870f53f6c1d1d4d7d845bdcd09a49fad462a34375c8b39
font_01_sfnt_off0000a0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A2 11288 bytes
SHA-256: bf448e00f7db328b9645235e2df67db41295d212fdaa67592f67768a18ce9de2