Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ccd800c2e49e0b7…

MALICIOUS

PDF

41.6 KB Created: 2020-11-01 15:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: cff2417ddf59c3ad02f245834f7b2180 SHA-1: 064018fd62f6c165fd5199b4b003fd42c5194d58 SHA-256: 6ccd800c2e49e0b7017652bf9e792ffc0a57edb03ae4e1d3876c6135e9b7ee98
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.cc/123?keyword=map+of+lake+harris+chain+of+lakes In PDF document text
    • https://wiwawuvagowe.weebly.com/uploads/1/3/4/4/134496439/kelemipemelilen.pdfIn PDF document text
    • https://bogadisosupotaj.weebly.com/uploads/1/3/0/7/130776541/a539254f60.pdfIn PDF document text
    • https://rofowijajexer.weebly.com/uploads/1/3/4/4/134476616/f2922ab58981.pdfIn PDF document text
    • https://tuwozuzoleza.weebly.com/uploads/1/3/4/5/134509843/xapadibenazeja.pdfIn PDF document text
    • https://gukepofefefika.weebly.com/uploads/1/3/1/4/131437977/8957516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5f99f46652656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f8cc80894b7e.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/d895ac47-8758-4529-b06e-9a6ad3bdff87/o_cheerleader_assassinatos_a_histri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2969/5134/files/polycell_finishing_skim_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/kipoxulowuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2394/8183/files/hepatitis_b_gpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7892/7011/files/maweruwoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5394/6782/files/shadow_era_apk_mod.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_off00006358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6358 5172 bytes
SHA-256: f34ed5cd830c61b102314c1a01a93ea224ff3ad3cf5f87b7f54aedf5871207ae
font_01_sfnt_off000074f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F7 10848 bytes
SHA-256: 3cedbab243466069984ded6464f341ab9a4fd06591b8ed02486c3196e5a1fe4b