Malicious PDF — malware analysis report

Static analysis result for SHA-256 8703ce696f0d767a…

MALICIOUS

PDF

42.8 KB Created: 2020-11-05 20:16:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1a070c14f15512bf5f10d810af9dab24 SHA-1: 094c7ff257aadc980cf73c9f243de2a25c4ef7e4 SHA-256: 8703ce696f0d767a77c2a6a4134a4b336348f1133596e36950de21d076addda9
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://traffmen.ru/123?keyword=archaea+that+are+harmful+to+humans In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/3e75a4e696b2f2d.pdfIn PDF document text
    • https://tubomomumaxef.weebly.com/uploads/1/3/4/5/134508744/9919338.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/runemevurexuziwone.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/2a8f012ba7dd.pdfIn PDF document text
    • https://pirovosarelivo.weebly.com/uploads/1/3/1/4/131406751/f2784f31731ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377414/normal_5f97be898d9ec.pdfIn PDF document text
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/zapokatukexogax.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/duweb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385230/normal_5f9b2e076edd7.pdfIn PDF document text
    • https://xuxavapivobe.weebly.com/uploads/1/3/4/5/134590147/4452659.pdfIn PDF document text
    • https://gojupisot.weebly.com/uploads/1/3/4/0/134016698/nonulikasu_siwuvalusemila_nivobigitim_munorare.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_5f9f7e82e3bdf.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/b88fc7ac-cfba-4727-a902-642a62e3ea02/13241889652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d59fbc2-db04-44c5-9f39-a79db8e3a053/pixefabekabovali.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_off000069c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69C9 5112 bytes
SHA-256: 10ceab46177d693f9f7a736567f8de244f8f666d6473d162e1dba420bb3d8a89
font_01_sfnt_off00007b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 10484 bytes
SHA-256: f9cb08bf809cc8bf1e56d817d71cf32354e25eb6a632f2f6bdb737aa1b6b388f

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