Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac200b128e39c80…

MALICIOUS

PDF

43.6 KB Created: 2020-09-20 03:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4525b700175fe19cea2ac3f2c893f38a SHA-1: 58c787c68ad3d06d8667986a7ad24c1ad4bb683e SHA-256: 9ac200b128e39c803b7fd79a0cf370913bc5e0df7bf50021ec3e5f0d6201072f
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.me/wix?keyword=st+ignatius+school+mobile+al+tuition In PDF document text
    • http://velesofe.floatingspecks.com/uploads/1/3/1/0/131070867/wesafojat.pdfIn PDF document text
    • http://files.bystudiomonicaiglesias.com/uploads/1/3/0/8/130874477/pusilosaru_korubelulure_rikawa.pdfIn PDF document text
    • http://files.realestatebycharlene.com/uploads/1/3/1/8/131857213/275218.pdfIn PDF document text
    • http://guxoxokak.pamperandpreen.co.uk/uploads/1/3/0/7/130738755/jusugo.pdfIn PDF document text
    • http://files.waiheelimu.org/uploads/1/3/1/6/131607174/nomuvawezilamaranu.pdfIn PDF document text
    • http://files.bretthall.org/uploads/1/3/1/4/131437699/2461377.pdfIn PDF document text
    • http://fagozi.duesouthhome.com/uploads/1/3/1/4/131454526/ralijug.pdfIn PDF document text
    • http://luzar.gianatiempogallery.com/uploads/1/3/2/8/132814930/bazulo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0cb612be-b762-412c-b29c-8bbfa175aa86.filesusr.com/ugd/738632_090af3e6e0024c16a1f63a26ab767fbd.pdf?index=trueIn PDF document text
    • https://3f36a2f8-d85e-4388-aa59-5f5be0cac432.filesusr.com/ugd/dcc11b_9667338535a1426ca623f7dac0d7d1a7.pdf?index=trueIn PDF document text
    • https://e3bbb704-8907-4513-8235-e0c7f47ef6ae.filesusr.com/ugd/41f880_ac76d0d1b9174acd81d30f98dd3f038a.pdf?index=trueIn PDF document text
    • https://b60a354b-3b25-4c8e-a3e0-a813eebf633e.filesusr.com/ugd/110ef3_123955140f534697a30be031a2359a32.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4745/0789/files/08_scion_xb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3203/4980/files/9193326417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/biludetejuvujatolometa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/gk_capsule_bankers_adda.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_off000068b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B3 5360 bytes
SHA-256: 457fe377def89b68ad72aaecec9229f747af2ce252406a3208c4d94ae80cb7f9
font_01_sfnt_off00007acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ACF 11124 bytes
SHA-256: 6e7bb8b331b1ec1229ad6de2e6ac50bf68c8f36a27bab62bacc74eb011010feb