Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ac84562bf8a745a…

MALICIOUS

PDF

46.2 KB Created: 2020-10-27 14:57:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 18f96d34963f50c4599c5e82d1dbc779 SHA-1: 3f023b7c0f707e8981d72ef2d6a0675f609e5278 SHA-256: 9ac84562bf8a745af84cf534e0a025d62358c0d39152c4d6b8cb1b929d3bfba4
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to disposable hosting and redirector infrastructure, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary URL, https://ttraff.me/123?keyword=north+country+union+junior+high+school+phone+number, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to external content. No scripts were extracted, but the link farm nature strongly suggests a malicious intent, possibly for SEO abuse or to host further malicious content.

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/123?keyword=north+country+union+junior+high+school+phone+number In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f8dffa6eacc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f920fd04aad8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370057/normal_5f9107eead948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f89461ba5d43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f9606559e9be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403274/normal_5f9372dd71560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402745/normal_5f935bde716c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422914/normal_5f97ec30bc1fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_5f94edac01e67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_5f951c6091140.pdfIn PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/wefabotiwiximemopi.pdfIn PDF document text
    • https://luwiritogejoti.weebly.com/uploads/1/3/4/2/134266422/mawapipufi_romos_jokebugebezupex_mutut.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/gogodevo.pdfIn PDF document text
    • https://moleresudiba.weebly.com/uploads/1/3/4/4/134447347/4064209.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/54c86654.pdfIn PDF document text
    • https://radisowe.weebly.com/uploads/1/3/4/3/134366404/2521828.pdfIn PDF document text
    • https://fagisidide.weebly.com/uploads/1/3/2/6/132682833/bomagev_zavonabewud_fenorewusar_kezofenetig.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/gemugi_tevugalojaboxi_pasuwog_zolewomunuru.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/b0a828.pdfIn PDF document text
    • https://mitiguranam.weebly.com/uploads/1/3/4/4/134456526/9118106.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/6542864.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/bujuloza-livagokonafu.pdfIn PDF document text
    • https://kudumegowejo.weebly.com/uploads/1/3/4/2/134266354/3257191.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/9c49e.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/salotapokizano-devur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/32776905839.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/automate_app_tutorial.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_off0000753f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x753F 5424 bytes
SHA-256: 326fba8bab54fc6f8744ead2ddb4a20321cd2335133486c4a93d800c32353359
font_01_sfnt_off0000879d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879D 10272 bytes
SHA-256: d9e78ddb7d08ec4c9082943327c35c6476eed3bbf330207c4b56eb8187038842

Open this report in the interactive analyzer, or submit your own file for analysis.