Malicious PDF — malware analysis report

Static analysis result for SHA-256 135577c588351728…

MALICIOUS

PDF

55.3 KB Created: 2020-10-26 15:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 6d98640d94abe6e011dc1d56e986160e SHA-1: 29dfa2e97a238f18f1bce1eee497396c7e688aa7 SHA-256: 135577c5883517284d2e2af4fecee0a29c29150bfdea05e6aee01e768066d7de
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://cctraff.ru/aws?keyword=meddic+sales+process+pdf In PDF document text
    • https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/67074.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/jumeno-fesulijuzexid.pdfIn PDF document text
    • https://sodejokare.weebly.com/uploads/1/3/4/3/134349501/9700735.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/sanufiruwula-nuxagadedanureg.pdfIn PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/vuvamafu-bebajo-jelatad-vunuto.pdfIn PDF document text
    • https://nukevokisoget.weebly.com/uploads/1/3/2/7/132711970/6204283.pdfIn PDF document text
    • https://rurujopolobadez.weebly.com/uploads/1/3/4/4/134444805/8171150.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/ruxaju_kufogepax.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/votawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f8a8f098a66e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371806/normal_5f88b65276ee5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374703/normal_5f9639ec87245.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368762/normal_5f889087d8f79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386593/normal_5f906b9731888.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f8fe5d8e60b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f870afe6daaa.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000098c0.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000098c0.bin)
    • https://uploads.strikinglycdn.com/files/f3854aca-98e0-4bad-8da9-60a412e61d04/download_diablo_2_lord_of_destructio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f082691-01c6-434e-941e-2010f2057a48/15520966741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fe9a040-5f56-4b84-a9d9-03edc0b95b64/xologezimojama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35143647-b458-4e63-a35e-d2f4ea2ab550/35973854861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/483c84e4-c4d8-4c14-8e91-9f3c366baba2/niwikuvumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b94b6a8-2810-4836-bad8-989d197e9e8b/24309968727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/122c7c92-83ce-418b-97bc-23d8d4db01df/wonuxepenerizep.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 extracted file (font_00_sfnt_off000098c0.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000098c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C0 5156 bytes
SHA-256: e02e4678489632ac7b12fb5a5d9d841c0642f55d32f8722b0b916dfc992792c3
font_01_sfnt_off0000aa59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA59 11472 bytes
SHA-256: d07399cc1bfc4a5e3d00c5eb8ac069ae1359945b38dfdcce05cf015490ef1cc6