Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a608ced5df6cd9c…

MALICIOUS

PDF

43.4 KB Created: 2020-10-17 09:39:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8d95d481a57dc6b1781e7269cfb8356b SHA-1: 682d0758c38b418177a1f18e9fbc813543fa02f3 SHA-256: 0a608ced5df6cd9cb4e0e16a74ea7689eeacf163bbc815a23244bcb35ac77d8e
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://gettraff.ru/123?keyword=cia+world+factbook+mexico+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373271/normal_5f899a7b103f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f8722c73343b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_5f8a878ee4662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f897cf1821d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366630/normal_5f875d87b9d44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f87b087323e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5f88bcf42a60c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f89cb64a1172.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/7209100.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/1003721.pdfIn PDF document text
    • https://wopuremob.weebly.com/uploads/1/3/2/6/132696580/sufuzagipiv-divoxizidegewor-famevitesi-waxaraxiza.pdfIn PDF document text
    • https://namunobuwuper.weebly.com/uploads/1/3/0/7/130776476/2861442.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/5461814.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/sidobojugonuxexoz.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/sulusilalope-jobede.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/454a96f6-2b32-4909-9ff6-cf930e3cf4cb/tapuxuguxepinofubomumoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/035b60b9-9775-440c-afaa-cedba0a32ff2/dusavumebonevizowin.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_off000069a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A1 5392 bytes
SHA-256: d9beac21b96f9be19268147cbbc5fe032f02e3f442ee769b9eba553ec1857a46
font_01_sfnt_off00007bf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF7 10656 bytes
SHA-256: 11a3bcc618cc0521d3b5ef33484db09dff95346057b3194b5815e36ce452e272

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