Malicious PDF — malware analysis report

Static analysis result for SHA-256 d119139f5682a5b2…

MALICIOUS

PDF

40.9 KB Created: 2020-10-05 12:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d668b8b94eaddfa87509f45783806729 SHA-1: 185c05f08e99fd9c905a95b36b646cf08685e59e SHA-256: d119139f5682a5b28460c2eb7c57aaa0658f8d41fd569123faa1cbfe884a1528
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.link/pify?keyword=make+it+to+me+lyrics+terjemahan In PDF document text
    • http://vovudut.edushorts.com/uploads/1/3/0/7/130776255/gikedodaxomejinuzuvi.pdfIn PDF document text
    • http://riziga.lovelocalnashville.com/uploads/1/3/0/9/130969018/3365685.pdfIn PDF document text
    • http://galemorup.zestconsultancy.co.uk/uploads/1/3/1/4/131406390/kisenogikidakok_kodojifubo.pdfIn PDF document text
    • http://pejefa.achievewe.org/uploads/1/3/2/7/132740930/rogebapinatibo_bodebumirodi.pdfIn PDF document text
    • http://wopetamiw.missionhilldental.ca/uploads/1/3/0/7/130776078/vokavogifebar-mubun.pdfIn PDF document text
    • http://files.basicallygames.org/uploads/1/3/0/8/130873997/3ba8caaf0d25c7.pdfIn PDF document text
    • http://lodubuxu.bluezoneflanders.com/uploads/1/3/1/4/131406202/titufipegugiseb.pdfIn PDF document text
    • http://files.bergeneducational.com/uploads/1/3/1/8/131856907/silag.pdfIn PDF document text
    • http://pigisewux.blessedbemidwifery.com/uploads/1/3/2/6/132682787/betogizuliz.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/93571128268.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/nuwuzawanazumine.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/1/0429/7595/3049/files/litajusixaloxabufoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/korugirubobaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5052/7639/files/57737048941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4697/5905/files/16228241269.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5912/5153/files/limado.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_off0000626f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626F 5288 bytes
SHA-256: a5831f65f590786b58009ef3325a604443a928536ad0f7bb4cb38c29b9e282a8
font_01_sfnt_off00007457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7457 9948 bytes
SHA-256: 51c2ad2cf279eaf3cf7a9c9df66f86f3351de3db46e4a92b8508c44768176f08

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