Malicious PDF — malware analysis report

Static analysis result for SHA-256 8698a1166836af02…

MALICIOUS

PDF

43.5 KB Created: 2020-10-16 14:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f34faf1a6d4cbc262c5d070ada0a9026 SHA-1: 2dd32ca6964f8e6b3cf45612d53d2471af3cf577 SHA-256: 8698a1166836af02a2c4922aa5d989b490b57e534a717cda649835fdfb1a1fd4
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/123?keyword=circular+motion+pdf+12th+hsc In PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/xesubezefewe.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/zebapesuluboxaj.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/35c5aeb.pdfIn PDF document text
    • https://mikazeral.weebly.com/uploads/1/3/2/3/132303371/5050020.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/6888629.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/2825193.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/606c3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366343/normal_5f87881febe97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f8754792a2e2.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/a902ea4ba4dcc6a.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/xukupidexodiwuwe.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/8f9093.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7d3707d5d.pdfIn PDF document text
    • https://fobewesepujub.weebly.com/uploads/1/3/2/3/132303403/9396850.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/1/0430/8841/2836/files/75955659415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9042/0914/files/80706992481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/0060/2013/files/digimon_world_dawn_leveling_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8207/9139/files/hungry_shark_apk_6.4.6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9403/9975/files/Canton_Court_Brooklyn_NY.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_off00006b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B98 5484 bytes
SHA-256: e75a3c8676063541b13303a0e5ec1767cd2d6141a56015c86bd38d9bf3c08aec
font_01_sfnt_off00007e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E10 10112 bytes
SHA-256: a879c3be0ec8c34a8626bd3b4580ed8c35ffa84ebccf1c1fbeb8f1f93c150f21

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