Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12a12c9e69629f9…

MALICIOUS

PDF

56.5 KB Created: 2020-10-20 14:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 03e076d9311ad4aa1d2c715143f94e41 SHA-1: f0c0f2b68d40bdec1a419af016d81a656deb0bc3 SHA-256: b12a12c9e69629f929fe6ba14b717a0109550778fb6bdef76901d8b90610c5de
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=pitchfork+gift+guide+2020 In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/vupedipepirip-molovidofuruk.pdfIn PDF document text
    • https://fufivivol.weebly.com/uploads/1/3/0/8/130873849/vefenafafa.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/dekefomivupe-kovak-talajonipa-fedebiraroz.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/1289162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f871bacea41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366309/normal_5f87b9cb14053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f88bd9089f2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370088/normal_5f8e0ccfd50d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366055/normal_5f8a123955b1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f899fac0dcb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365570/normal_5f86f7776f3cb.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/lojiniposiwawu.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/7024051.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/c5abc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/593c5969-996e-4bd9-82ff-b105d90e43de/fawutunuwotudevorivo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb5e917-28c4-48bd-9a2c-0af1f79be5b9/jilolinotelomagivivovirap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c42ae24-4150-4eb0-9908-adf0240c22c7/galexose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9159159d-baec-4c55-a501-1d62347803a8/kitetonupezuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a42a269-1684-4006-934b-fb1f7bc666f3/25878544244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa4a7740-52cb-467f-8991-3365815202af/15114913501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc0329f-d121-4c97-98fd-c81f887f7f1c/93951922801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f78311a0-84aa-400a-ab9b-7acd6af81116/bivaxelatuwisirefividix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e19cf4b-39b1-4373-95d0-3449f05b1b6f/97397413703.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_off00009e58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E58 5200 bytes
SHA-256: 4d2144676a70d1abe25c6797e183cc5e6881eba9ea26934eb267daa928d3cb8f
font_01_sfnt_off0000afff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFF 11156 bytes
SHA-256: fe26b3be4073c9ce1dc086be3009edf43c521db637e71e73702cb2b4a8120516

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