Malicious PDF — malware analysis report

Static analysis result for SHA-256 299483ab67c48a76…

MALICIOUS

PDF

41.4 KB Created: 2020-10-15 10:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 651610f8e41f0bfaa8ecbc0aa640c588 SHA-1: 91c2045b705d7b929320b2e84ea954c9121e9b49 SHA-256: 299483ab67c48a7627a785fb8f4d39ec536ce486de155537213e689defbf69be
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.cc/pify?keyword=online+resort+reservation+system+thesis+documentation+pdf In PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/rilaxabozojubiku.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/b919b1ed8f.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/nadojamanerufow.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/28ec4.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/7904132.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/1515306.pdfIn PDF document text
    • https://kupugaxome.weebly.com/uploads/1/3/0/9/130969415/3582242.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/bipidojutuguru_nofarabiwiga_poxezumasojan_lifuwageme.pdfIn PDF document text
    • https://welofubevi.weebly.com/uploads/1/3/1/8/131856084/6172502.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/vakijofip-razosesusizubog-gazafofekas.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/1/0435/8176/7848/files/47334860803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6137/3847/files/xewofaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7151/0934/files/pontoon_seat_covers_vs_full_cover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/4669/0712/files/charlie_le_mindu_ss12.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_off000062e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 5584 bytes
SHA-256: b41c9b24e16b9dcbb677ca15a421ea1966da34830ba83d5d1e6e46ff2cdbaede
font_01_sfnt_off000075c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C6 10108 bytes
SHA-256: 0487f1b0c0e4faf95c1f935bd1ccf38bc2734a8b89cf131e2e91e4d203cf0925

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